Parker Piston Seals E4 (NBR)

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 the 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

 

Operating pressure ≤ 16 bar
Operating temperature -30 °C to +80 °C
Sliding speed ≤ 1 m/s
Media Compressed air, both lubricated and oil-free (after greasing for fitting)

Compounds

Standard: N3578, NBR compound (≈ 75 Shore A).

For low temperatures: N8613, NBR compound (≈ 80 Shore A). For high temperatures: V3664, FKM compound (≈ 85 Shore A).

Installation

The profile E4 lip seals are simply pulled over the piston into the groove. To avoid damaging the seal lips during installation, sharp edges should be removed from the piston and the cylinder tube.

Under oil-free conditions, is important to obtain a solid lubrication film inside the cylinder tube. This must be achieved before assembly to ensure a long service life of the seal.

For piston guidance,we recommend the profile F2 piston guidance tape. Please refer to our profile F2 for details of the piston outside diameter and the gap measurements.

D d H Order code D d H Order code
10 5 3 E41050N3578 105 93 8.5 E4A501N3578
12 6 4 E41206N3578 110 98 8.5 E4B002N3578
12 7 4 E41207N3578 120 105 10 E4C005N3578
14 8 4 E41408N3578 125 110 10 E4C010N3578
16 8 5.5 E41608N3578 130 115 10 E4D015N3578
16 9 5 E41609N3578 140 125 10 E4E040N3578
16 10 4 E41610N3578 150 135 10 E4F004N3578
20 12 5.5 E42012N3578 160 140 14 E4G014N3578
20 14 4 E42014N3578 160 145 10 E4G022N3578
20.5 14 4 E42016N3578 180 160 14 E4J014N3578
22 16 5 E42216N3578 200 180 14 E4L018N3578
24 16 5.5 E42416N3578 220 199 15 E4M005N3578
25 15.5 5.8 E42515N3578 250 225 18 E4N525N3578
25 17 4.5 E42516N3578 250 226 16 E4N502N3578
25 17 5.5 E42517N3578 250 230 14 E4N503N3578
28 18 7 E42818N3578 320 295 14 E4Q205N3578
32 20 6.5 E43220N3578 320 295 17 E4Q206N3578
32 22 7 E43222N3578 470 440 21 E4R720N3578
32 24 5.5 E43224N3578
34 24 7 E43424N3578
36 26 7 E43666N3578
40 30 7 E44030N3578
42 30 6 E44203N3578
45 33 9 E44533N3578
45 37 7 E44537N3578
50 40 7 E45040N3578
60 50 7 E46022N3578
63 53 7 E46353N3578
65 55 7 E46510N3578
70 58 7 E47058N3578
75 65 7.5 E47065N3578
80 68 8.5 E48068N3578
84 72 8.5 E48072N3578
100 88 8.5 E4A088N3578

Brand

Parker