Piston seal Prädifa series E4 | South Africa

Piston seal Prädifa series E4 | Product Series

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Inside Diameter (mm)

Element Height (mm)

Groove Width

Minimum Working Temperature (C)

Maximum Working Temperature (C)

Seal Material

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Piston seal Prädifa series E4

Piston seal for pneumatic cylinders, single-acting. U-cup design.

Technical Specifications

  • Thermal Application Type: Standard Moderate Temperature (-35 to 100°C), High Temperature (< 205°C), Expanded Low and High Temperature (< -35 to 140°C), Low Temperature (< -35 C)
  • Media: Pneumatic
  • Polymer Material Options: Nitrile Butadiene Rubber (NBR, XNBR), Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®), Fluorocarbon Rubber (FKM, FPM), Ethylene Propylene Rubber (EPM, EPR, EPDM)
  • Maximum Operating Pressure: 16 to 17 bar
  • Minimum Operating Temperature: -50 to -5 °C
  • Maximum Operating Temperature: 80 to 200 °C
  • Maximum Surface Speed: 0.5 m/sec, 1.0 m/sec
  • Unit of Measure: Length: mm
  • Cushioning Mechanism: No
  • Pressure Rating: Pneumatic Pressure (< 16 bar)
Safety Warning

Full Product Description

The E4 piston seal is a lip seal specifically developed for use in pneumatics. The dimensions of the standard series correspond to the cylinder diameters according to ISO 3320, CETOP RP 52 P, RP 43 P and RP 53 P.
The E4 piston seal is available in both Ultrathan® and rubber compounds. The Ultrathan® versions are extremely resistant against wear and pressure peaks.

• Due to application-optimized geometry and compounds suitable for use in oiled as well as in oil-free air (after initial lubrication on assembly).
• Suitable for cylinders with dead-center cushioning.
• Good wear resistance.
• Long service life thanks to application-optimized compounds.
• Smooth running due to optimum lubricant-retaining sealing lip geometry.
• Easier installation.
• Suitable for fully automatic installation
• Assembly on one-part piston is possible.
• High temperature resistance in case of suitable compound selection.
• Excellent media resistance in case of suitable compound selection.
• Installation in closed housings.
• Special seal geometry ensures optimal function even in case of flow-controlled exhaust air.

Range of application:
Mainly used for pneumatic cylinders.

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