Piston seal Prädifa series E4 | Parker NA
687424
687424

Piston seal Prädifa series E4

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

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Product Overview
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.
Tech Specifications
Description

Performance Characteristics

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)

CAD
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Product Support

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