Rod seal/wiper Prädifa series EM, Ultrathan® | Product Series

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Outside Diameter (mm)

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Maximum Working Temperature (C)

Seal Material

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Rod seal/wiper Prädifa series EM, Ultrathan®

Rod seal/wiper Prädifa series EM, Ultrathan®

Where to Buy

Rod seal and wiper for pneumatic cylinders. U-cup design. Short axial length.

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 bar, 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 to 100°C), Low Temperature (< -35 C), High Temperature (< 205°C), Expanded Low and High Temperature (< -35 to 140°C)
  • Pressure Rating: Pneumatic Pressure (< 16 bar)
Safety Warning

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

Related Documents

Product Demos & Tutorials
How to Properly Store and Clean Elastomer Seals
Mixing the right ingredients: Material Development at Parker-Prädifa
Parker Final Exam in Physics / Sealing Systems Put to the Test
Literature and Reference Materials
Pneumatic Seals--PTD3351
Compound Data Sheet TPU P5010
Installation Guidelines for Rod Seals--PTD3351
Rod seal/wiper EM--PTD3351
Storage and Cleaning of Elastomer Seals--PTD3032
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Products Inside Diameter (mm) Outside Diameter (mm) Element Height (mm) Groove Width Minimum Working Temperature (C) Maximum Working Temperature (C) Seal Material
EM0302N3578 3 5.6 2.8 2.7 -30 100 N3578
EM0302N9150 3 5.6 2.8 2.7 -35 100 N9150
EM0302P5010 3 5.6 2.8 2.7 -30 100 P5010
EM0302V3839 3 5.6 2.8 2.7 -20 200 V3839
EM0407N9150 4 7 2.8 2.7 -35 100 N9150
EM0407P5010 4 7 2.8 2.7 -30 100 P5010
EM0407P5600 4 7 2.8 2.7 -20 80 P5600
EM0407V3839 4 7 2.8 2.7 -20 200 V3839
EM0508P5010 5 8 2.8 2.7 -30 100 P5010
EM0609N9150 6 9 2.8 2.7 -35 100 N9150
EM0609P5009 6 9 2.8 2.7 -45 95 P5009
EM0609P5010 6 9 2.8 2.7 -30 100 P5010
EM0609P5600 6 9 2.8 2.7 -20 80 P5600
EM0609V3839 6 9 2.8 2.7 -20 200 V3839
EM0811E3676 8 11.5 3.2 3 -50 150 E3676
EM0811N9150 8 11.5 3.2 3 -35 100 N9150
EM0811P5009 8 11.5 3.2 3 -45 95 P5009
EM0811P5010 8 11.5 3.2 3 -30 100 P5010
EM0811V3839 8 11.5 3.2 3 -20 200 V3839
EM1014E3676 10 14 3.7 3.4 -50 150 E3676
EM1014N3510 10 14 3.7 3.4 -20 150 N3510
EM1014N9150 10 14 3.7 3.4 -35 100 N9150
EM1014P5009 10 14 3.7 3.4 -45 95 P5009
EM1014P5010 10 14 3.7 3.4 -30 100 P5010
EM1014P5600 10 14 3.7 3.4 -20 80 P5600
EM1014V3839 10 14 3.7 3.4 -20 200 V3839
EM1214N9150 12 16.5 4 3.700 -35 100 N9150
EM1214P5009 12 16.5 4 3.700 -45 95 P5009
EM1214P5010 12 16.5 4 3.700 -30 100 P5010
EM1214P5600 12 16.5 4 3.700 -20 80 P5600
EM1214V3839 12 16.5 4 3.700 -20 200 V3839
EM1418P5010 14 18.5 4 3.700 -30 100 P5010
EM1620N3512 16 20.5 4 3.700 -20 150 N3512
EM1620P5009 16 20.5 4 3.700 -45 95 P5009
EM1620P5010 16 20.5 4 3.700 -30 100 P5010
EM1620P5011 16 20.5 4 3.700 -35 85 P5011
EM1620P5600 16 20.5 4 3.700 -20 80 P5600
EM1620V3839 16 20.5 4 3.700 -20 200 V3839
EM1822P5010 18 22.5 4 3.700 -30 100 P5010
EM2025E8790 20 25 4.6 4.150 -50 150 E8790
EM2025N3510 20 25 4.6 4.150 -20 150 N3510
EM2025P5009 20 25 4.6 4.150 -45 95 P5009
EM2025P5010 20 25 4.6 4.150 -30 100 P5010
EM2025P5600 20 25 4.6 4.150 -20 80 P5600
EM2025V3839 20 25 4.6 4.150 -20 200 V3839
EM2227P5010 22 27 4.6 4.150 -30 100 P5010
EM2530P5009 25 30 4.6 4.150 -45 95 P5009
EM2530P5010 25 30 4.6 4.150 -30 100 P5010
EM2530P5600 25 30 4.6 4.150 -20 80 P5600
EM2530V3839 25 30 4.6 4.150 -20 200 V3839
EM2833P5600 28 33.5 5 4.55 -20 80 P5600
EM3035P5010 30 35.5 5 4.55 -30 100 P5010
EM3237P5009 32 37.5 5 4.55 -45 95 P5009
EM3237P5010 32 37.5 5 4.55 -30 100 P5010
EM3237V3839 32 37.5 5 4.55 -20 200 V3839
EM4005P5208 40 46 5.5 4.9 -35 100 P5208
EM0811P5008 8.0 11.5 3.2 3.0 -35 100 P5008
EM1014P5008 10.0 14.0 3.7 3.4 -35 100 P5008
EM1214P5008 12.0 16.5 4 3.7 -35 100 P5008
EM0609P5000 6 9 2.8 2.7 -20 100 P5000
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