Parker rod seals for hydraulic and pneumatic cylinders and actuators seal the applied system pressure against the atmosphere side. Their purpose is to prevent external leakage and thus avoid contamination of the ambient environment. They are available as single-acting and double acting seals. High-pressure applications usually require a tandem rod sealing system including a buffer seal. Rod seals typically interact with wiper elements in the cylinder sealing system. A wide range of compound and profile configurations is available to meet the specific application profile. There are rod seals available that comply with ISO 6020, ISO 5597 and ISO 7425-2 standards.
Symmetrical Rod and Piston Seal Prädifa series BA
Technical Specifications
Inside Diameter: 3 to 980 mm
Outside Diameter: 8.5 to 1005 mm
Thermal Application Type: Expanded Low and High Temperature (< -35°C to 140°C), High Temperature (< 205 C) °C, Low Temperature (< -35 C) °C, Standard moderate Temperature (-35 C to 100 C) °C
Pressure Rating: High Pressure (< 500 bar), Low Pressure (< 160 bar) bar
Media: Hydraulic
Polymer Material Options: Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®), Thermoplastic Copolyester Elastomer (TPC, TPE), Nitrile Butadiene Rubber (NBR, XNBR), Fluorocarbon Rubber (FKM, FPM), Ethylene Propylene Rubber (EPM, EPR, EPDM)
Maximum Operating Pressure: 350 bar
Minimum Operating Temperature: -50 to -20 °C
Maximum Operating Temperature: 80 to 200 °C
Maximum Surface Speed: 0.5 m/sec
Unit of Measure: Length: mm
Cushioning Mechanism: No
Full Product Description
The PARK-O-PAK® rod seal BA made of wear-resistant Ultrathan® is a compact seal design for hydraulic applications. Due to its symmetric design, the seal can also be used as a piston seal. The O-ring guarantees the pre-loading of the seal lips, even under low pressures or vacuum. Due to the good setting behavior of the elastomer O-ring, this pre-loading is largely constant. As system pressure increases, compression of the sealing edges rises due to the pressure-dependent deformation of the seal profile.
There are three variants of the PARK-O-PAK® product series. The product series BA is suitable for standard grooves, e.g. according to ISO 5597. The product series SA is suitable for axially short compact designs. The product series TA is suitable for radially slim designs, e.g. for telescopic cylinders.
- Robust seal profile for harshest operating conditions.
- Extreme wear resistance.
- Easier installation.
- Insensitive to pressure peaks.
- High extrusion resistance.
- Excellent media resistance in case of suitable compound selection.
- Suitable compounds available for special requirements of the chemical process industry.
- Suitable compounds available for special requirements of the food processing industry.
- Installation in closed and undercut housings.
- Low compression set.
- Further dimensions of machined series with short lead times available.
Range of application:
Mainly for the sealing of piston rods and plungers in heavy duty applications in mobile and stationary hydraulics.
The BA rod seal is available in the following compounds:
00030 – Industrial applications
00020 – Light-duty
00043 – Low temperatures
00064 – Heavy-duty
Related Documents
Symmetrical Rod and Piston Seal Prädifa series SA
Technical Specifications
Inside Diameter: 5 to 279.4 mm
Outside Diameter: 12 to 298.5 mm
Thermal Application Type: Expanded Low and High Temperature (< -35°C to 140°C), Standard moderate Temperature (-35 C to 100 C) °C
Pressure Rating: High Pressure (< 500 bar), Low Pressure (< 160 bar) bar
Media: Hydraulic
Polymer Material Options: Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®), Thermoplastic Copolyester Elastomer (TPC, TPE), Ethylene Propylene Rubber (EPM, EPR, EPDM)
Maximum Operating Pressure: 350 bar
Minimum Operating Temperature: -50 to -20 °C
Maximum Operating Temperature: 80 to 150 °C
Maximum Surface Speed: 0.5 m/sec
Unit of Measure: Length: mm
Cushioning Mechanism: No
Full Product Description
The PARK-O-PAK® rod seal SA made of wear-resistant Ultrathan® is a compact seal design for hydraulic applications. Due to its symmetric design, the seal can also be used as a piston seal. The O-ring guarantees the pre-loading of the seal lips, even under low pressures or vacuum. Due to the good setting behavior of the elastomer O-ring, this pre-loading is largely constant. As system pressure increases, compression of the sealing edges rises due to the pressure-dependent deformation of the seal profile.
There are three variants of the PARK-O-PAK® product series. The product series BA is suitable for standard grooves, e.g. according to ISO 5597. The product series SA is suitable for axially short compact designs. The product series TA is suitable for radially slim designs, e.g. for telescopic cylinders.
- Robust seal profile for harshest operating conditions.
- Extreme wear resistance.
- Easier installation.
- Insensitive to pressure peaks.
- High extrusion resistance.
- Excellent media resistance in case of suitable compound selection.
- Suitable compounds available for special requirements of the chemical process industry.
- Suitable compounds available for special requirements of the food processing industry.
- Installation in closed and undercut housings.
- Short axial assembly length.
- Low compression set.
- Further dimensions of machined series with short lead times available.
Range of application:
Mainly for the sealing of piston rods and plungers in heavy duty applications in mobile and stationary hydraulics.
The SA rod seal is available in the following compounds:
00030 – Industrial applications
00020 – Light-duty
00043 – Low temperatures
00064 – Heavy-duty
Related Documents
Symmetrical Rod and Piston Seal Prädifa series TA
Technical Specifications
Inside Diameter: 15 to 685.8 mm
Outside Diameter: 25 to 711.2 mm
Media: Hydraulic
Polymer Material Options: Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®)
Maximum Operating Pressure: 350 bar
Minimum Operating Temperature: -30 °C
Maximum Operating Temperature: 80 °C
Maximum Surface Speed: 0.5 m/sec
Unit of Measure: Length: mm
Cushioning Mechanism: No
Thermal Application Type: Standard moderate Temperature (-35°C to 100°C)
Pressure Rating: High Pressure (< 500 bar)
Full Product Description
The PARK-O-PAK® rod seal TA made of wear-resistant Ultrathan® is a compact seal design for hydraulic applications. Due to its symmetric design, the seal can also be used as a piston seal. The O-ring guarantees the pre-loading of the seal lips, even under low pressures or vacuum. Due to the good setting behavior of the elastomer O-ring, this pre-loading is largely constant. As system pressure increases, compression of the sealing edges rises due to the pressure-dependent deformation of the seal profile.
There are three variants of the PARK-O-PAK® product series. The product series BA is suitable for standard grooves, e.g. according to ISO 5597. The product series SA is suitable for axially short compact designs. The product series TA is suitable for radially slim designs, e.g. for telescopic cylinders.
- Robust seal profile for harshest operating conditions.
- Extreme wear resistance.
- Easier installation.
- Insensitive to pressure peaks.
- High extrusion resistance.
- Excellent media resistance in case of suitable compound selection.
- Suitable compounds available for special requirements of the chemical process industry.
- Suitable compounds available for special requirements of the food processing industry.
- Installation in closed and undercut housings.
- Low compression set.
- Further dimensions of machined series with short lead times available.
Range of application:
Mainly for the sealing of piston rods and plungers in heavy duty applications in mobile and stationary hydraulics.
The TA rod seal is available in the following compounds:
00030 – Industrial applications
00020 – Light-duty
00043 – Low temperatures
00064 – Heavy-duty
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Rod seal/wiper Prädifa series EL
Technical Specifications
Media: Pneumatic
Polymer Material Options: Ethylene Propylene Rubber (EPM, EPR, EPDM), Hydrogenated Nitrile Butadiene Rubber (HNBR, HSN), Nitrile Butadiene Rubber (NBR, XNBR), Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®), Fluorocarbon Rubber (FKM, FPM)
Maximum Operating Pressure: 10, 16 bar
Minimum Operating Temperature: -50 to -10 °C
Maximum Operating Temperature: 80 to 200 °C
Maximum Surface Speed: 1, <1 m/sec
Unit of Measure: Length: mm
Cushioning Mechanism: No
Thermal Application Type: Expanded Low and High Temperature (< -35 C to 140 C) °C, Low Temperature (< -35 C) °C, High Temperature (< 205 C) °C, Standard moderate Temperature (-35 C to 100 C) °C
Pressure Rating: Pneumatic Pressure (< 16 bar) bar
Full Product Description
The EL pneumatic seal/wiper ring is a proven combination element for sealing piston rods in compact pneumatic cylinders and valve lifters. The EL product series is available in both Ultrathan® and rubber versions. The Ultrathan® versions are characterized by extremely high wear resistance.
- Due to application-optimized geometry and compounds suitable for use in oiled as well as in oil-free air (after initial lubrication on assembly).
- Bi-functional element: seal and wiper.
- Extreme wear resistance.
- Smooth running due to optimum lubricant-retaining sealing lip geometry.
- Excellent media resistance in case of suitable compound selection.
- Short axial assembly length.
- Installation in closed and undercut housings.
- The coordinated geometries of the seal and wiper lips achieve favorable friction coefficients and long service life.
Range of application:
- Pneumatic cylinders
The EL rod seal/wiper is available in the following compounds:
- N3582 – Industrial applications
- V3639 – High temperatures
- P5008 – Heavy-duty
- N8613 – Low temperatures
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Rod seal/wiper Prädifa series EM
Technical Specifications
Media: Pneumatic
Polymer Material Options: Nitrile Butadiene Rubber (NBR, XNBR), Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®), Fluorocarbon Rubber (FKM, FPM), Hydrogenated Nitrile Butadiene Rubber (HNBR, HSN), Ethylene Propylene Rubber (EPM, EPR, EPDM)
Maximum Operating Pressure: 10, 16 bar
Minimum Operating Temperature: -50 to -20 °C
Maximum Operating Temperature: 80 to 200 °C
Maximum Surface Speed: 1 m/sec
Unit of Measure: Length: mm
Cushioning Mechanism: No
Thermal Application Type: Standard moderate Temperature (-35 C to 100 C) °C, Low Temperature (< -35 C) °C, High Temperature (< 205 C) °C, Expanded Low and High Temperature (< -35 C to 140 C) °C
Pressure Rating: Pneumatic Pressure (< 16 bar) bar
Full Product Description
The EM rod seal/wiper ring for pneumatic applications is a proven combination element for sealing piston rods in compact pneumatic cylinders and valve lifters. The special design using a wear-resistant Ultrathan® compound enables installation in smallest grooves for extremely low break-away and dynamic friction.
- Due to application-optimized geometry and compounds suitable for use in oiled as well as in oil-free air (after initial lubrication on assembly).
- Bi-functional element: seal and wiper.
- Extreme wear resistance.
- Low static and dynamic friction thanks to miniaturized design.
- Smooth running due to optimum adjustment of the functional lips.
- Smooth running due to optimum lubricant-retaining sealing lip geometry.
- Excellent media resistance in case of suitable compound selection.
- Short axial assembly length.
- Short radial assembly depth.
- Installation in closed and undercut housings.
- Low compression set.
- The coordinated geometries of the seal and wiper lips achieve favorable friction coefficients and long service life.
Range of application:
- Rod seal/wiper for mini-pneumatics.
The EM rod seal/wiper is available in the following compounds:
- P5010 – Heavy-duty
- P5011 – Bio-degradable media
- P5009 – Heavy duty/low temperatures
- V3839 – High temperatures
- N3578 – Industrial applications
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Rod seal/wiper Prädifa series EN
Technical Specifications
Media: Pneumatic
Polymer Material Options: Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®)
Maximum Operating Pressure: 16 bar
Minimum Operating Temperature: -35 to -20 °C
Maximum Operating Temperature: 80 to 100 °C
Maximum Surface Speed: 1 m/sec
Unit of Measure: Length: mm
Cushioning Mechanism: No
Thermal Application Type: Standard moderate Temperature (-35 C to 100 C) °C
Pressure Rating: Pneumatic Pressure (< 16 bar) bar
Full Product Description
The self-retaining Ultrathan® EN rod seal/wiper ring for piston rods of pneumatic cylinders performs two functions: sealing and wiping. The Ultrathan® compound is characterized by extremely high wear resistance. The dirt shield formed at the wiper prevents moisture from migrating underneath the seal into the groove. As a result, corrosion which frequently occurs inside the groove can be avoided. In addition, due to the absence of undercuts and dead spaces, the assembly space in front of the seal is easy to clean. This makes the EN seal/wiper ring particularly well suited for food and pharmaceutical production and for all other applications requiring easy- to-clean components.
- Bi-functional element: seal and wiper.
- Robust seal profile for harshest operating conditions.
- Extreme wear resistance.
- No risk of corrosion since the combined retainer and wiper part eliminates the need for additional wire circlips.
- Long service life due to coordinated geometries of the functional lips and compound selection.
- Smooth running due to optimum lubricant-retaining sealing lip geometry.
- Excellent media resistance in case of suitable compound selection.
- Suitable compounds available for special requirements of the food processing industry.
- Identical housing for E7, E8, E9, EU, EF, EN, EW and ET.
- Installation in open housings.
- Low compression set.
- The coordinated geometries of the seal and wiper lips achieve favorable friction coefficients and long service life.
- Product geometry prevents dirt deposits at the front face of the cylinder.
Range of application:
- The EN rod seal/wiper has been developed for hygienically sensitive applications, such as clean room technology, medical device technology, pharmaceuticals and food applications.
- The EN rod seal/wiper is available in the following compounds:
- P5008 – Heavy-duty
- P5000 – Food applications (FDA approval)
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Rod seal, wiper and guiding element Prädifa series EP
Technical Specifications
Media: Pneumatic
Polymer Material Options: Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®)
Maximum Operating Pressure: 16 bar
Minimum Operating Temperature: -35 to -20 °C
Maximum Operating Temperature: 100 °C
Maximum Surface Speed: 1 m/sec
Unit of Measure: Length: mm
Cushioning Mechanism: No
Thermal Application Type: Standard moderate Temperature (-35 C to 100 C) °C
Pressure Rating: Pneumatic Pressure (< 16 bar) bar
Full Product Description
The EP pneumatic rod seal/wiper and guiding element for piston rods of pneumatic cylinders performs three functions: sealing, wiping and guiding. The Ultrathan® compound is characterized by extremely high wear resistance. The multi-component design of the EP profile with an aluminum cage enables very easy installation by axial press-fit into the cylinder head.
- Due to application-optimized geometry and compounds suitable for use in oiled as well as in oil-free air (after initial lubrication on assembly).
- Multi-functional element: seal, wiper and guiding element.
- Extreme wear resistance.
- Smooth running due to optimum lubricant-retaining sealing lip geometry.
- Simple fabrication of the housing.
- Short radial assembly depth.
- Low compression set.
- The coordinated geometries of the seal and wiper lips achieve favorable friction coefficients and long service life.
- Multi-functionality provides warehousing cost benefits.
Range of application:
- Pneumatic cylinders
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Rod seal/wiper Prädifa series ET
Technical Specifications
Media: Pneumatic
Polymer Material Options: Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®)
Maximum Operating Pressure: 10 bar
Minimum Operating Temperature: -35 to -25 °C
Maximum Operating Temperature: 80 to 85 °C
Maximum Surface Speed: 1 m/sec
Unit of Measure: Length: mm
Cushioning Mechanism: No
Thermal Application Type: Standard moderate Temperature (-35 C to 100 C) °C
Pressure Rating: Pneumatic Pressure (< 16 bar) bar
Full Product Description
The self-retaining ET Ultrathan® seal/wiper for flattened piston rods of non-rotating pneumatic cylinders is the oval counterpart of the round standard EU profile. It performs two functions: sealing and wiping. The Utrathan® material is characterized by extremely high wear resistance.
- Due to application-optimized geometry and compounds suitable for use in oiled as well as in oil-free air (after initial lubrication on assembly).
- Bi-functional element: seal and wiper.
- Extreme wear resistance.
- No risk of corrosion since the combined retainer and wiper part eliminates the need for additional wire circlips.
- Long service life due to coordinated geometries of the functional lips and compound selection.
- Smooth running due to optimum lubricant-retaining sealing lip geometry.
- Excellent media resistance in case of suitable compound selection.
- Identical housing for E7, E8, E9, EU, EF and ET.
- Installation in open housings.
- Low compression set.
- The coordinated geometries of the seal and wiper lips achieve favorable friction coefficients and long service life.
Range of application:
- For flattened rods of pneumatic cylinders protected against rotation.
- The ET rod seal/wiper is available in the following compounds:
- P5008 – Industrial applications
- P5009 – Industrial applications/low temperatures
- P5000 – Food applications (FDA approval)
- P5001 – Bio-degradable media
Related Documents
Rod seal/wiper Prädifa series EU
Technical Specifications
Media: Pneumatic
Polymer Material Options: Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®)
Maximum Operating Pressure: 16 bar
Minimum Operating Temperature: -45 to -20 °C
Maximum Operating Temperature: 80 to 100 °C
Maximum Surface Speed: 1 m/sec
Unit of Measure: Length: mm
Cushioning Mechanism: No
Thermal Application Type: Standard moderate Temperature (-35 C to 100 C) °C, Low Temperature (< -35 C) °C
Pressure Rating: Pneumatic Pressure (< 16 bar) bar
Full Product Description
The EU self-retaining Ultrathan® seal/wiper performs two functions: sealing and wiping. The Ultrathan® material is characterized by extremely high wear resistance.
- Due to application-optimized geometry and compounds suitable for use in oiled as well as in oil-free air (after initial lubrication on assembly).
- Bi-functional element: seal and wiper.
- Robust seal profile for harshest operating conditions.
- Extreme wear resistance.
- No risk of corrosion since the combined retainer and wiper part eliminates the need for additional wire circlips.
- Long service life due to coordinated geometries of the functional lips and compound selection.
- Smooth running due to optimum lubricant-retaining sealing lip geometry.
- Excellent media resistance in case of suitable compound selection.
- Identical housing for E7, E8, E9, EU, EF and ET.
- Installation in open housings.
- Low compression set.
- The coordinated geometries of the seal and wiper lips achieve favorable friction coefficients and long service life.
Range of application:
- For piston rods in pneumatic cylinders.
- The EU rod seal/wiper is available in the following compounds:
- P5008 – Industrial applications
- P5009 – Industrial applications/low temperatures
- P5000 – Food applications (FDA approval)
- P5001 – Bio-degradable media
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PolyPak Hydraulic Seal with Beveled Lips
Technical Specifications
Maximum Operating Pressure: 2000 to 7000 psi
Body Material: FKM, TPU, TPC-ET, EPDM, HNBR, XNBR
Spring Material: FKM, NBR, EPR
For Fluid Type: Various depending on material
Colour: Various depending on material
Thermal Application Type: Various depending on material °F
Durometer: 75 to 95 Shore A, 53 to 65 Shore D
Polymer Material Options: Fluorocarbon Rubber (FKM, FPM), Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®), Thermoplastic Copolyester Elastomer (TPC, TPE), Ethylene Propylene Rubber (EPM, EPR, EPDM), Hydrogenated Nitrile Butadiene Rubber (HNBR, HSN), Nitrile Butadiene Rubber (NBR, XNBR)
Specifications Met: Various depending on material
Media: Hydraulic
Unit of Measure: Length: inch
Maximum Surface Speed: 100 (0.5 m/s) ft/min
Full Product Description
A sampling of Parker’s part numbers are shown in the configurator above for select materials and sizes. If the material and dimensions required are not shown, assistance with part number configuration may be found in the literature documents in the Product Support tab. To check current tooling, review the Part Number Look-up document. Contact Parker for requirements outside typical ranges. Parker’s Type B PolyPak® (BPP Profile) is a squeeze seal with a symmetrical profile for use in either rod or piston applications in hydraulic systems. The rectangular shape of its cross section ensures stability in the gland.
The standard Molythane shell (seal body) provides high wear resistance and the O-ring energizer element functions as a spring to maintain sealing contact under low pressure or vacuum applications. The bevelled lip design of the Type B PolyPak is excellent for cutting fluid film. The sharp beveled lip is formed by a precision knife trimming process.
A wide selection of sizes and alternate compounds allow this profile to match up with many hydraulic applications. The Type B PolyPak is an economical choice as a stand-alone seal or can be used in tandem with a buffer seal. In piston applications, this seal will function as a unidirectional seal. Dual Type B PolyPak seals should not be installed back-to-back in bi-directional pressure applications, as a pressure trap between the seals may occur. Instead, for bi-directional piston sealing, incorporate a PIP Ring®.
Standard Materials (Shell or Seal Body):
- P4615A90 Molythane®; Temp -65 / +200F; Pressure* 5000 psi; Surface speed
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Deep PolyPak Hydraulic Seal with Knife Trimmed Scraper Lips
Technical Specifications
Maximum Operating Pressure: 2000 to 7000 psi
Body Material: FKM, TPU, TPC-ET, EPDM, HNBR, XNBR
Spring Material: FKM, NBR, EPR
For Fluid Type: Various depending on material
Colour: Various depending on material
Thermal Application Type: Various depending on material °F
Durometer: 75 to 95 Shore A, 53 to 65 Shore D
Polymer Material Options: Fluorocarbon Rubber (FKM, FPM), Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®), Thermoplastic Copolyester Elastomer (TPC, TPE), Ethylene Propylene Rubber (EPM, EPR, EPDM), Hydrogenated Nitrile Butadiene Rubber (HNBR, HSN), Nitrile Butadiene Rubber (NBR, XNBR)
Specifications Met: Various depending on material
Media: Hydraulic
Unit of Measure: Length: inch
Maximum Surface Speed: 100 (0.5 m/s) ft/min
Full Product Description
A sampling of Parker’s part numbers are shown in the configurator above for select materials and sizes. If the material and dimensions required are not shown, assistance with part number configuration may be found in the literature documents in the Product Support tab. To check current tooling, review the Part Number Look-up document. Contact Parker for requirements outside typical ranges. Parker’s Type B PolyPak® (BPP Profile) is a squeeze seal with a symmetrical profile for use in either rod or piston applications in hydraulic systems. The rectangular shape of its cross section ensures stability in the gland.
The standard Molythane shell (seal body) provides high wear resistance and the O-ring energizer element functions as a spring to maintain sealing contact under low pressure or vacuum applications. The bevelled lip design of the Type B PolyPak is excellent for cutting fluid film. The sharp beveled lip is formed by a precision knife trimming process.
A wide selection of sizes and alternate compounds allow this profile to match up with many hydraulic applications. The Type B PolyPak is an economical choice as a stand-alone seal or can be used in tandem with a buffer seal. In piston applications, this seal will function as a unidirectional seal. Dual Type B PolyPak seals should not be installed back-to-back in bi-directional pressure applications, as a pressure trap between the seals may occur. Instead, for bi-directional piston sealing, incorporate a PIP Ring®.
Standard Materials (Shell or Seal Body):
- P4615A90 Molythane®; Temp -65 / +200F; Pressure* 5000 psi; Surface speed
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BT PROFILE, SINGLE-ACTING U-CUP STYLE ROD SEAL FOR HYDRAULIC APPLICATIONS
Technical Specifications
Maximum Operating Pressure: 5,000 psi
For Fluid Type: Varies depending on material
Color: Tan, Aqua
Thermal Application Type: Varies depending on material
Polymer Material Options: Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®)
Durometer: 90 Shore A, 60 Shore D
Specifications Met: none
Media: Hydraulic
Maximum Surface Speed: 100 (0.5 M/S) ft/min
Full Product Description
A sampling of Parker’s part numbers are shown in the configurator above for select materials and sizes. If the material and dimensions required are not shown, assistance with part number configuration may be found in the literature documents in the Product Support tab. To check current tooling, review the Part Number Look-up document found in Product Support tab. Contact Parker for requirements outside standards shown.
Parker’s BT Profile is a single-acting, non-symmetrical rod seal for hydraulics. The U-cup shaped seal features a robust knife trimmed, beveled lip which does an excellent job wiping fluid film. Its rectangular shaped cross section ensures stability in the gland. A stabilizing lip is located below the primary sealing lip, just above the base of the seal, to provide enhanced sealing performance and ensure a tight, stable fit in the gland.
Available in Parker’s proprietary Resilon® polyurethanes, the BT Profile provides
- Long life
- Extrusion resistance
- Low compression set
- Shock load resistance, and
- Excellent sealing performance at zero pressure
The BT Profile is designed to be used as a stand-alone rod seal or for use with the BR Profile rod buffer seal for more critical sealing applications.
Standard Materials:
- P4300A90 Resilon® polyurethane; Temp -65 / +275F; Pressure* 5000 psi; Surface speed
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BD PROFILE, SINGLE ACTING O-RING ENERGIZED ROD SEAL FOR HYDRAULIC APPLICATIONS
Technical Specifications
Maximum Operating Pressure: 5,000 psi
Body Material: TPU
Spring Material: NBR
For Fluid Type: Varies depending on material
Colour: Varies depending on material
Thermal Application Type: Varies depending on material
Durometer: 90 to 95 Shore A
Polymer Material Options: Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®)
Specifications Met: none
Media: Hydraulic
Unit of Measure: Length: inch
Maximum Surface Speed: 100 (0.5 M/S) ft/min
Full Product Description
AVAILABILITY: A sampling of Parker’s part numbers are shown in the configurator above for select materials and sizes. If the material and dimensions required are not shown, assistance with part number configuration may be found in the literature documents in the Product Support tab. To check current tooling, review the Part Number Look-up document found in Product Support tab. Contact Parker for requirements outside standards shown.
Parker’s BD Profile is a single-acting, non-symmetrical profile rod seal for hydraulics. The o-ring energizer functions as a spring to maintain sealing contact under vacuum, low pressure, and cold temperature conditions. The knife trimmed, beveled lip does an excellent job wiping fluid film. Its rectangular shaped cross section ensures stability in the gland. A stabilizing lip is located below the primary sealing lip, just above the base of the seal, to provide enhanced sealing performance and ensure a tight, stable fit in the gland.
Available in Parker’s proprietary urethanes, the BD Profile provides
- Long life
- Extrusion resistance
- Low compression set
- Shock load resistance, and
- Excellent sealing performance at zero pressure
The BD Profile is designed to be used as a stand-alone rod seal or for use with the BR Profile rod buffer seal for more critical sealing applications.
Enhanced extrusion resistance: For enhanced extrusion protection, the BD Profile may be designed with a positively actuated back-up ring located in the heel (see BD Profile with Back-up Ring).
Standard Materials (Shell or Seal Body):
- P4300A90 Resilon® polyurethane; Temp -65 / +275F; Pressure* 5000 psi; Surface speed <1.6 ft/s (100 fpm)
- P4301A90 Resilon polyurethane; Temp -35 / +275F (+225F in water); Pressure* 5000 psi; Surface speed <1.6 ft/s (100 fpm)
- P4700A90 Polyurethane; Temp -65 / +200F; Pressure* 5000 psi; Surface speed <1.6 ft/s (100 fpm)
- P5065A88 Low temperature urethane; Temp -70 / +200F; Pressure* 3500 psi; Surface speed < 1.6 ft/s (100 fpm)
*Pressure range shown is for systems without wear rings. If used with wear rings, consult Engineering Section (Section2) of Parker’s Fluid Power Seal Design Guide, Catalog EPS5370.
Energizer Spring Materials:
Standard spring energizer is a common 70A nitrile o-ring. Additional energizer elements available, including low-temperature nitrile and canted-coil spring.
Alternate Materials: For applications that may require an alternate material, please contact your Parker EPS representative.
Typical applications:
- Dynamic sealing of hydraulic cylinders and equipment components, including: Actuators, pumps, and
valves
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Light Load U-Cup Seal with Beveled Lip
Technical Specifications
Groove Width: 0.062 to 0.500 inch
Maximum Operating Pressure: 2000 psi – Oil; 250 psi – Air psi
Minimum Operating Temperature: -65 °F
Maximum Operating Temperature: 400 °F
For Fluid Type: Airl Oil, Broad range, Water / Steam, Oil, Fuel, Low Temp Water, Drilling Mud, Water Glycol, Acide/Base, Water, Steam, Acid, Skydrol, Air
Colour: Black
Durometer: 80 to 90 Shore A
Thermal Application Type: Low temperature (<-30F), Standard temperature (-30F to 250F), High temperature (260F – 400F), Expanded low and high temperature (<-30F, >250F) °F
Polymer Material Options: Nitrile Butadiene Rubber (NBR, XNBR), Fluorocarbon Rubber (FKM, FPM), Ethylene Propylene Rubber (EPM, EPR, EPDM)
Specifications Met: none
Media: Multiple
Unit of Measure: Length: Inch
Pressure Rating: Hydraulic to 2000 psi
Maximum Surface Speed: 0.5 m/sec, 1 m/sec
Seal Type: Light load symmetrical U-cup with beveled cut ID and OD lip style
Full Product Description
A sampling of Parker’s part numbers are shown in the configurator above for select materials and sizes. If the material and dimensions required are not shown, assistance with part number configuration may be found in the literature documents in the Product Support tab. To check current tooling, review the Part Number Look-up document. Contact Parker for requirements outside typical ranges. Parker’s 8400 Profile U-cup is a light load, symmetrical lip seal for use in either rod or piston sealing applications. The thin, flexible lip design reacts to low pressure and provides an extremely smooth, steady movement with less break away force required because of the inherent low friction. The 8400 style utilizes a beveled lip, ideal for wiping fluid film. Available in a variety of elastomer compounds to cover a wide range of applications. The 8400 U seal is primarily designed for pneumatic applications to 250 psi, however, it can also be used in low to medium pressure hydraulic applications. The pressure range of the U ring seal may be extended by incorporating an 8700 Series anti-extrusion back-up.
Standard Materials:
- N4180A80 NBR; Temp -40 / +250F; Pressure* 1,250 psi hydraulic (250 psi pneumatic); Surface speed**<1.6 ft/s
- N4274A85 XNBR; Temp -10 / +250F; Pressure* 1,750 psi hydraulic (250 psi pneumatic); Surface speed** <1.6 ft/s
- V4208A90 FKM; Temp -5 / +400F; Pressure* 2,000 psi hydraulic (250 psi pneumatic); Surface speed** <1.6 ft/s
- E4259A80 EPDM; Temp -65 / +300F; Pressure* 1,250 psi hydraulic (250 psi pneumatic); Surface speed** <1.6 ft/s
*Pressure range shown is for systems without wear rings. If used with wear rings, consult Engineering Section (Section2) of Parker’s Fluid Power Seal Design Guide, Catalog EPS5370.
**Surface speed for pneumatic applications <3.3 ft/s
Alternate Materials: For applications that may require an alternate material, please contact your Parker EPS representative.
Typical applications:
- Dynamic sealing of hydraulic & pneumatic cylinders and equipment components
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Low Friction FlexiSeal with Beveled Lips
Technical Specifications
Maximum Operating Pressure: Vacuum to 10,000 psi
Minimum Operating Temperature: -425 °F
Maximum Operating Temperature: 600 °F
For Fluid Type: Ultra broad range, General / Other, Oils
Color: White, Turquoise, Gold, Gray, Black, Brown, Tan, Purple, Translucent, Natural
Durometer: 55 to 72 Shore D
Thermal Application Type: Low temperature (<-30F), Expanded low and high temperature (<-30F, >250F) °F
Polymer Material Options: Polytetrafluoroethylene (PTFE, mPTFE, TFM, Polon®), Ultra-High Molecular Weight Polyethylene (UHMWPE), Thermoplastic Copolyester Elastomer (TPC, TPE)
Industry Application: Difficult environments which may include: Harsh chemicals and solvents, Abrasive media High temperatures to +600F, Cyrogenic temperatures down to -450F, Unlubricated applications, Low friction requirements, High pressures to 10,000
Specifications Met: FDA/NSF Compliant
Media: Multiple Fluids
Maximum Surface Speed: 0.5 m/sec
Full Product Description
Due to the customized nature of this product, only a sampling of Parker’s part numbers are shown. If the materials and dimensions you need are not shown, assistance with part number configuration may be found in the literature document in the Product Support tab. Parker’s FBC-V series FlexiSeal™ is a symmetrical spring-energized PTFE lip seal for rod and piston featuring beveled style lips, and cantilever spring for maximum ID & OD sealing. FlexiSeal profiles utilize a variety of PTFE jacket profiles, spring types and materials. PTFE and other machinable high performance materials of construction are used where elastomeric seals fail to meet an application’s temperature range, chemical resistance or friction requirements and deliver advantages which include:
- Low friction
- Wide temperature range (-450F to +600F)
- Ultra broad chemical compatibility
- Dry running ability in dynamic sealing applications
- Resistance to degradation, heat aging and physical property alteration during temperature cycling
- High surface speed
FBC-V series FlexiSeals are precision machined to fit inch/fractional or metric rod and piston glands. Standard Materials (seal jacket or body):
- 0100, Virgin PTFE
- 0102, Modified PTFE
- 0120, Mineral Filled PTFE
- 0127, Mineral Filled PTFE — FDA compliant for rotary applications
- 0128, Mineral Filled PTFE — Antimicrobial
- 0203, Fiberglass Filled PTFE
- 0204, Fiberglass and MoS2 Filled PTFE
- 0301, Graphite Filled PTFE
- 0307, Carbon-Graphite Filled PTFE
- 0405, Stainless Steel Filled PTFE
- 0502, Carbon Fiber Filled PTFE
- 0601, Aromatic Polyester Filled PTFE
- 0615, Proprietary Low Wear PTFE
- 0901, UHMW Polyethylene
- 0913, Hytrel® Unlubricated Thermoplastic Elastomer
Spring materials: Medium load cantilever springs are available in corrosion-resistant metal alloys, including stainless steel and Elgiloy. Alternate Materials: For applications that may require an alternate material, please contact your Parker EPS representative. Lip Style: The beveled (or chamfered) ID and OD lip shape allows for ease of installation and permits lubrication to nest under the lip and feed through in reciprocating dynamic applications. The result is a microscopic film of lubrication that increases seal and hardware service life. The beveled lip creates a narrow contact footprint which concentrates sealing force on a single point, maximizing sealing ability and minimizing friction.
Pressure Rating: Standard FlexiSeal designs are rated to 3,000 psi when used in glands conforming to the dimensions supplied in Parker’s PTFE Lip Seal Design Guide, Catalog EPS5340, using materials that meet the temperature requirements of the application. Extended heel radial FlexiSeals are available which increase the pressure rating to 10,000 psi under the same conditions.
Features of the FBC-V series compared to alternate Parker FlexiSeal profiles:
- Film Breaking Ability: Very High
- Low Pressure Sealing Ability: Very Good
- Friction: Medium
- Contamination Exclusion: Low
- Good in Abrasive Media: No
- Available in Mil-G-5514 Glands: Yes
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Rod seal Prädifa series B3
Technical Specifications
Thermal Application Type: Low Temperature (< -35 C) °C, High Temperature (< 205 C) °C, Standard moderate Temperature (-35 C to 100 C) °C
Media: Hydraulic
Polymer Material Options: Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®)
Maximum Operating Pressure: 400, 250, 200 bar
Minimum Operating Temperature: -45 to -20 °C
Maximum Operating Temperature: 80 to 110 °C
Maximum Surface Speed: 0.5 m/sec
Unit of Measure: Length: mm
Cushioning Mechanism: No
Pressure Rating: High Pressure (< 500 bar) bar
Full Product Description
The B3 Ultrathan® rod seal is a U-ring with interference fit on the outer diameter. It is extremely wear resistant, ensures reliable load holding performance and is suitable for high-pressure applications in hydraulics.
- Robust seal profile for harshest operating conditions.
- Extreme wear resistance.
- Easier installation.
- Insensitive to pressure peaks.
- High extrusion resistance.
- Excellent media resistance in case of suitable compound selection.
- Suitable compounds available for special requirements of the chemical process industry.
- Suitable compounds available for special requirements of the food processing industry.
- Dimensions according to ISO 5597.
- Installation in closed and undercut housings.
- Low compression set.
- Further dimensions of machined series with short lead times available.
Range of application:
Mainly for sealing piston rods and plungers in heavy-duty mobile and stationary hydraulics applications. The range of dimensions is primarily oriented to the requirements of ISO 5597 and ISO 3320 for housings and diameters.
The B3 rod seal is available in the following compounds:
- P5008 – Industrial applications
- P6000 – Heavy-duty
- P5009 – Low temperatures
- P5001 – Bio-degradable fluids
- P5000 – Food applications (FDA approval)
- P5010 – Light-duty
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Rod seal/wiper Prädifa series EW
Technical Specifications
Media: Pneumatic
Polymer Material Options: Fluorocarbon Rubber (FKM, FPM)
Maximum Operating Pressure: 16 bar
Minimum Operating Temperature: -10 °C
Maximum Operating Temperature: 150 °C
Maximum Surface Speed: 1 m/sec
Unit of Measure: Length: mm
Cushioning Mechanism: No
Thermal Application Type: High Temperature (< 205 C) °C
Pressure Rating: Pneumatic Pressure (< 16 bar) bar
Full Product Description
The self-retaining EW seal/wiper combines the properties of the proven E9 high-temperature seal with a metallic wiper for particularly dirt-prone and harsh environments. Thus, the EW seal/wiper provides a scraper function in addition to the sealing function. It is used for scraping strongly adhering particles off the cylinder rod, thereby protecting the seal against excessive wear. The combination of the metallic wiper and wear-resistant sealing compound achieves considerably longer service life.
- Due to application-optimized geometry and compounds suitable for use in oiled as well as in oil-free air (after initial lubrication on assembly).
- Bi-functional element: seal and wiper.
- Good wear resistance.
- Robust seal profile for harshest operating conditions.
- High temperature resistance in case of suitable compound selection.
- Excellent media resistance in case of suitable compound selection.
- Identical housing for E7, E8, E9, EU, EF, EN, EW, ET.
- Easy snap assembly with assembly aids.
Range of application:
The seal/wiper EW is suitable for use in environments that are particularly prone to dirt and in high temperatures, such as crust breaker cylinders, which are used in aluminium production.
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BD Profile With Back-up, Single Acting O-Ring Energized Rod Seal for High-Pressure Hydraulic Applications
Technical Specifications
Maximum Operating Pressure: 10,000 psi
Body Material: TPU
Spring Material: NBR
For Fluid Type: Oils
Colour: Varies depending on material
Thermal Application Type: Varies depending on material
Durometer: 90 Shore A
Polymer Material Options: Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®)
Specifications Met: none
Media: Hydraulic
Unit of Measure: Length: inch
Maximum Surface Speed: 100 (0.5 M/S) ft/min
Full Product Description
A sampling of Parker’s part numbers are shown in the configurator above for select materials and sizes. If the material and dimensions required are not shown, assistance with part number configuration may be found in the literature documents in the Product Support tab. To check current tooling, review the Part Number Look-up document found in Product Support tab. Contact Parker for requirements outside standards shown. Parker’s BD Profile with Back-up is a single-acting, non-symmetrical profile rod seal for hydraulics. The o-ring energizer functions as a spring to maintain sealing contact for improved cold temperature sealing, and under low pressure or vacuum applications. The knife trimmed, beveled lip does an excellent job wiping fluid film. Its rectangular shaped cross section ensures stability in the gland. A stabilizing lip is located below the primary sealing lip, just above the base of the seal, to provide enhanced sealing performance and ensure a tight, stable fit in the gland. The heel design incorporates a positively actuated back-up ring for anti-extrusion and extended high pressure sealing capability.
Available in Parker’s proprietary urethanes, the BD Profile provides
- Long life
- Extrusion resistance
- Low compression set
- Shock load resistance, and
- Excellent sealing performance at zero pressure
The BD Profile with Back-up is designed to be used as a stand-alone rod seal or for use with the BR Profile rod buffer seal for more critical sealing applications.
Improved extrusion resistance: For enhanced extrusion protection, the BD Profile with Back-up is designed with a positively actuated back-up ring located in the heel.
Standard Materials (Shell or Seal Body):
- P4300A90 Resilon® polyurethane; Temp -65 / +275F; Pressure* 10,000 psi; Surface speed
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Light Load U-cup Seal with Straight Cut Lips
Technical Specifications
Groove Width: 0.062 to 0.500 inch
Maximum Operating Pressure: 2,000 – Oil; 250 – Air psi
Minimum Operating Temperature: -65 °F
Maximum Operating Temperature: 400 °F
For Fluid Type: Air, Oil, Broad range, Water / Steam, Oil, Fuel, Low Temp Water, Drilling Mud, Water Glycol, Acide/Base, Water, Steam, Acid, Skydrol, Air
Colour: Black
Durometer: 80 to 90 Shore A
Thermal Application Type: Low temperature (<-30F), Standard temperature (-30F to 250F), High temperature (260F – 400F), Expanded low and high temperature (<-30F, >250F) °F
Polymer Material Options: Nitrile Butadiene Rubber (NBR, XNBR), Fluorocarbon Rubber (FKM, FPM), Ethylene Propylene Rubber (EPM, EPR, EPDM)
Specifications Met: none
Media: Multiple
Unit of Measure: Length: inch
Pressure Rating: Hydraulic to 2000 psi
Maximum Surface Speed: 0.5 m/sec, 1 m/sec
Full Product Description
A sampling of Parker’s part numbers are shown in the configurator above for select materials and sizes. If the material and dimensions required are not shown, assistance with part number configuration may be found in the literature documents in the Product Support tab. To check current tooling, review the Part Number Look-up document. Contact Parker for requirements outside typical ranges. Parker’s 8500 Profile U seal is a light load, symmetrical lip seal for use in either rod or piston sealing applications. The thin, flexible lip design reacts to low pressure and provides an extremely smooth, steady movement with less break away force required because of the inherent low friction. The 8500 style utilizes a knife-trimmed, straight-cut scraper lip, ideal for additional lip interference and wiping contamination away from the sealing edge. Available in a variety of elastomer compounds to cover a wide range of applications.
The 8500 profile U-cup is primarily designed for pneumatic applications to 250 psi, however, it can also be used in low to medium pressure hydraulic applications. The pressure range of the U-cup seal may be extended by incorporating an 8700 Series anti-extrusion back-up.
Standard Materials:
- N4180A80 NBR; Temp -40 / +250F; Pressure* 1,250 psi hydraulic (250 psi pneumatic); Surface speed** <1.6 ft/s
- N4274A85 XNBR; Temp -10 / +250F; Pressure* 1,750 psi hydraulic (250 psi pneumatic); Surface speed** <1.6 ft/s
- V4208A90 FKM; Temp -5 / +400F; Pressure* 2,000 psi hydraulic (250 psi pneumatic); Surface speed** <1.6 ft/s
- E4259A80 EPDM; Temp -65 / +300F; Pressure* 1,250 psi hydraulic (250 psi pneumatic); Surface speed** <1.6 ft/s
*Pressure range shown is for systems without wear rings. If used with wear rings, consult Engineering Section (Section2) of Parker’s Fluid Power Seal Design Guide, Catalog EPS5370.
**Surface speed for pneumatic applications <3.3 ft/s
Alternate Materials: For applications that may require an alternate material, please contact your Parker EPS representative.
Typical applications:
- Dynamic sealing of hydraulic & pneumatic cylinders and equipment components
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Rod seal Prädifa series B4
Technical Specifications
Thermal Application Type: Standard moderate Temperature (-35 C to 100 C) °C, Low Temperature (< -35 C) °C, High Temperature (< 205 C) °C
Media: Hydraulic
Polymer Material Options: Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®)
Maximum Operating Pressure: 500 bar
Minimum Operating Temperature: -45 to -20 °C
Maximum Operating Temperature: 95 to 110 °C
Maximum Surface Speed: 0.5 m/sec
Unit of Measure: Length: mm
Cushioning Mechanism: No
Pressure Rating: Extremely High Pressure (> 500 bar) bar
Full Product Description
The B4 Ultrathan® rod seal is a U-ring with interference fit on the outer diameter. It is extremely wear resistant and, due to the anti-extrusion ring, resistant against pressure peaks and ensures reliable load holding performance. It is suitable for high-pressure hydraulics applications of up to 1000 bar.
- Robust seal profile for harshest operating conditions.
- Extreme wear resistance.
- Easier installation.
- Insensitive to extreme pressure peaks.
- Extremely high extrusion resistance.
- Excellent media resistance in case of suitable compound selection.
- Suitable compounds available for special requirements of the chemical process industry.
- Suitable compounds available for special requirements of the food processing industry.
- Dimensions according to ISO 5597.
- Installation in closed and undercut housings.
- Additional sizes of machined products available on short notice.
Range of application:
Mainly for the sealing of piston rods and plungers in heavy-duty applications in mobile and stationary hydraulics. The dimensions mainly conform to the requirements of ISO 5597 and ISO 3320 for housing and diameters respectively.
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Rod seal Prädifa series BAI
Technical Specifications
Thermal Application Type: Extremely High Temperature (> 205 C) °C, Standard moderate Temperature (-35 C to 100 C) °C
Media: Hydraulic
Polymer Material Options: Polytetrafluoroethylene (PTFE, mPTFE, TFM, Polon®), Ultra-High Molecular Weight Polyethylene (UHMWPE)
Maximum Operating Pressure: 200 bar
Minimum Operating Temperature: -200 to -190 °C
Maximum Operating Temperature: 80 to 230 °C
Maximum Surface Speed: 15 m/sec
Unit of Measure: Length: mm
Cushioning Mechanism: No
Pressure Rating: Medium Pressure (< 250 bar) bar
Full Product Description
The BAI product series is a single-acting rod seal featuring a FlexiSeal® design with a helicoil spring. It is characterized by extremely high temperature and chemical resistance and ideally suited for use in the medium pressure range. Due to its short axial length, the seal is particularly well suited for installation in compact grooves.
- Heavy dynamic lip (inside) ensures longest life.
- Short, wiper-type dynamic lip reduces frictional forces due to hydrostatic pressure.
- Helical spring for high load and small deflection range.
- Squared, long static lip stabilizes the seal.
- Widest range of cross-sections and diameters available, including sizes for upgrading standard O-ring grooves.
- Many high-resilience energizer options available, including choice of light, medium and heavy loads and NACE for oil field use.
- Low-cost elastomeric energizers available, all with excellent fatigue resistance.
Range of application:
- For sealing reciprocating rods
The BAI rod seal is available in the following compounds:
- 001 – Industrial applications
- 005 – High temperatures
- 006 – Heavy-duty
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Rod seal Prädifa series BHI
Technical Specifications
Thermal Application Type: Standard moderate Temperature (-35 C to 100 C) °C, Extremely High Temperature (> 205 C) °C
Media: Hydraulic
Polymer Material Options: Ultra-High Molecular Weight Polyethylene (UHMW-PE), Polytetrafluoroethylene (PTFE, mPTFE, TFM, Polon®)
Maximum Operating Pressure: 550 bar
Minimum Operating Temperature: -260 to -190 °C
Maximum Operating Temperature: 80 to 300 °C
Maximum Surface Speed: 15 m/sec
Unit of Measure: Length: mm
Cushioning Mechanism: No
Pressure Rating: High Pressure (< 500 bar) bar
Full Product Description
The BHI product series is a single-acting rod seal featuring a FlexiSeal® design with a helicoil spring. It is characterized by extremely high temperature and chemical resistance and ideally suited for use in higher pressures.
- Extended heel reduces effects of extrusion.
- Heavy dynamic lip (inside) ensures longest life.
- Short, wiper-type dynamic lip reduces frictional forces due to hydrostatic pressure.
- Helical spring for high load and small deflection range.
- Squared, long static lip stabilizes the seal.
- Widest range of cross-sections and diameters available, including sizes for upgrading standard O-ring grooves.
- Many high-resilience energizer options available, including choice of light, medium and heavy loads and NACE for oil field use.
- Low-cost elastomeric energizers available, all with excellent fatigue resistance.
Range of application:
- High-pressure, reciprocating rod sealing.
The BHI rod seal is available in the following compounds:
- 001 – Industrial applications
- 005 – High temperatures
- 006 – Heavy-duty
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Rod seal Prädifa series E5
Technical Specifications
Thermal Application Type: Standard moderate Temperature (-35 C to 100 C) °C, Expanded Low and High Temperature (< -35 C to 140 C) °C, High Temperature (< 205 C) °C, Low Temperature (< -35 C) °C
Media: Pneumatic
Polymer Material Options: Nitrile Butadiene Rubber (NBR, XNBR), Fluorocarbon Rubber (FKM, FPM), Ethylene Propylene Rubber (EPM, EPR, EPDM), Hydrogenated Nitrile Butadiene Rubber (HNBR, HSN), Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®)
Maximum Operating Pressure: 16 bar
Minimum Operating Temperature: -50 to -5 °C
Maximum Operating Temperature: 80 to 200 °C
Maximum Surface Speed: 1 m/sec
Unit of Measure: Length: mm
Cushioning Mechanism: No
Pressure Rating: Pneumatic Pressure (< 16 bar) bar
Full Product Description
The E5 rod seal is a U-ring specifically designed for use in pneumatic applications. The dimensions of the standard range conform to the rod diameters according to ISO 3320 or CETOP RP 52 P, RP 43 P and RP 53 P. The E5 rod seal is available in both Ultrathan® and rubber compounds. The Ultrathan® variants are characterized by extremely high wear resistance and resistance against pressure peaks.
- Due to application-optimized geometry and compounds suitable for use in lubricated as well as in oil-free air (after initial lubrication on assembly).
- Robust seal profile for harshest operating conditions.
- Good wear resistance.
- Long service life thanks to application-optimized compounds.
- Smooth running due to optimum lubricant-retaining sealing lip geometry.
- Easier installation.
- High temperature resistance in case of suitable compound selection.
- Excellent media resistance in case of suitable compound selection.
- Installation in closed and undercut housings.
Range of application:
- Mainly used for pneumatic cylinders.
The E5 rod seal is available in the following compounds:
- N3578 – General purpose
- P5010 – Heavy-duty
- P5009 – Heavy-duty and low temperatures
- V3681 – High temperatures
- N8602 – Low temperatures
- N3510 – Expanded temperature range (high and low)
- E3676 – General purpose
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Rod seal/wiper set Prädifa series E8
Technical Specifications
Thermal Application Type: Standard moderate Temperature (-35 C to 100 C) °C, Expanded Low and High Temperature (< -35 C to 140 C) °C, High Temperature (< 205 C) °C, Low Temperature (< -35 C) °C
Media: Pneumatic
Polymer Material Options: Nitrile Butadiene Rubber (NBR, XNBR), Fluorocarbon Rubber (FKM, FPM), Ethylene Propylene Rubber (EPM, EPR, EPDM), Hydrogenated Nitrile Butadiene Rubber (HNBR, HSN), Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®)
Maximum Operating Pressure: 16 bar
Minimum Operating Temperature: -50 to -5 °C
Maximum Operating Temperature: 80 to 200 °C
Maximum Surface Speed: 1 m/sec
Unit of Measure: Length: mm
Cushioning Mechanism: No
Pressure Rating: Pneumatic Pressure (< 16 bar) bar
Full Product Description
The self-retaining E8 pneumatics seal/wiper set for piston rods of pneumatic cylinders performs two functions: sealing and wiping. The split design of the sealing set enables optimum adaptation of the materials to the requirements of the individual component (wiper and seal).
- Due to application-optimized geometry and compounds suitable for use in oiled as well as in oil-free air (after initial lubrication on assembly).
- Bi-functional element: seal and wiper.
- Good wear resistance.
- No risk of corrosion since the combined retainer and wiper part eliminates the need for additional wire circlips.
- Long service life due to coordinated geometries of the functional lips and compound selection.
- Smooth running due to optimum lubricant-retaining sealing lip geometry.
- High temperature resistance in case of suitable compound selection.
- Excellent media resistance in case of suitable compound selection.
- Product geometry prevents dirt deposits at the front face of the cylinder.
- Identical housing for E7, E8, E9, EU, EF and ET.
- Installation in open housings.
- The coordinated geometries of the seal and wiper lips achieve favorable friction coefficients and long service life.
Range of application:
Mainly used for pneumatic cylinders.
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Rod seal/wiper set Prädifa series E9
Technical Specifications
Thermal Application Type: Expanded Low and High Temperature (< -35 C to 140 C) °C, Low Temperature (< -35 C) °C, High Temperature (< 205 C) °C
Media: Pneumatic
Polymer Material Options: Ethylene Propylene Rubber (EPM, EPR, EPDM), Nitrile Butadiene Rubber (NBR, XNBR), Fluorocarbon Rubber (FKM, FPM)
Maximum Operating Pressure: 16 bar
Minimum Operating Temperature: -50 to -20 °C
Maximum Operating Temperature: 80 to 200 °C
Maximum Surface Speed: 1 m/sec
Unit of Measure: Length: mm
Cushioning Mechanism: No
Pressure Rating: Pneumatic Pressure (< 16 bar) bar
Full Product Description
The E9 seal/wiper for piston rods of pneumatic cylinders is the high-temperature version of the E8 and EU product series. The multi-component composition of the E9 profile with a metallic backup element makes it possible to locate the seal/wiper in the groove using a retention ring.
- Due to application-optimized geometry and compounds suitable for use in oiled as well as in oil-free air (after initial lubrication on assembly).
- Bi-functional element: seal and wiper.
- Good wear resistance.
- Smooth running due to optimum lubricant-retaining sealing lip geometry.
- High temperature resistance in case of suitable compound selection.
- Excellent media resistance in case of suitable compound selection.
- Identical housing for E7, E8, E9, EU, EF and ET.
- Installation in closed and undercut housings.
- The coordinated geometries of the seal and wiper lips achieve favorable friction coefficients and long service life.
Range of application:
Mainly used for pneumatic cylinders.