Parker Prädifa Rod Seals E8

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The self-retaining Parker Prädifa pneumatic rod seal/wiper set profile E8 for piston rods in pneumatic cylinders combines three functions:

Sealing, wiping, fixing. The split design of the sealing set allows the optimal adaptation of the materials to the requirements of the individual component (wiper and/or 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 the 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, EN, EW, 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

Operating pressure ≤ 16 bar
Operating temperature -20 °C to +80 °C 1)
Sliding speed ≤ 1 m/s
Media Compressed air, both lubricated and oil-free (after greasing for fitting)
1) For higher temperatures, see profile E9.


The sealing part of the profile E8 pneumatic rod seal/wiper is made of a special SFR® elastomer N3580 (NBR-based) with a hardness of approx. 80 Shore A.

This compound has excellent running properties, especially in the semi-frictional area. The profile EA fixing/scraping part is made of the highly wear-resistant W5035 plastic material.


The Parker Praedifa pneumatic profile E8 rod seal/wiper set is fitted into the housing by means of a circlip recess according to DIN 7993 (type B). The sealing part is pushed in and fixed by the EA retainer/wiper, which snaps in easily. During assembly, care should be taken to ensure that neither the scraper nor the sealing lips be damaged by sharp edges.

In case the seal/wiper set needs to be exchanged, this can be accomplished without removing the piston rod if a dismantling recess has been provided for.

d D H Order code
12 19 10 E8000900606
12 20 10.3 E8001100606
12 22 11 E8001200606
14 24 11 E8001400606
16 26 11 E8001600606
18 28 11 E8001800606
18 26 11 E8003600606
20 30 11 E8002000606
22 32 11.5 E8002200606
25 35 11.5 E8002500606
28 38 11.5 E8002800606
30 40 11.5 E8003000606
32 42 11.5 E8003200606
35 45 11.5 E8003500606
40 50 11.5 E8004000606
45 55 12.5 E8004500606
50 60 12.5 E8005000606
63 75 13 E8006300606




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