Parker Prädifa Rod Seals E5

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The Parker Prädifa E5 rod seal is a U-ring specifically designed for use in pneumatic applications. The dimensions of the standard range conform to the rod diameters according to ISO 3320 or CETOP RP 52 P, RP 43 P, and RP 53 P. The E5 rod seal is available in both Ultrathan® and rubber compounds. The Ultrathan® variants are characterized by extremely high wear resistance and resistance against 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).
  • Robust seal profile for harshest operating conditions.
  • Good wear resistance.
  • Long service life thanks to application-optimized compounds.
  • Smooth running due to optimum lubricant-retaining sealing lip geometry.
  • Easier installation.
  • High-temperature resistance in case of suitable compound selection.
  • Excellent media resistance in case of suitable compound selection.
  • Installation in closed and undercut housings.

Range of application

Mainly used for pneumatic cylinders.

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: N8602, NBR compound (≈70 Shore A). For high temperatures: V8550, FKM compound (≈ 80 Shore A. Standard: P5010, PUR compound (≈ 90 Shore A).

For low temperatures: P5009, PUR compound (≈ 94 Shore A).

Installation

The Parker Praedifa profile E5 lip seals can be easily snapped into the groove. In order to prevent damage to the seal lips during assembly, any sharp edges in the vicinity of the groove must be removed. The dynamic seal lip will only acquire its ultimate functional size if the dimensions of the installation groove are properly machined after installation. Under dry operating conditions it is absolutely essential to maintain a full lubrication film on the rod. This is ensured by an appropriate initial lubrication. When using the profile E5 lip seal in pneumatic cylinders under non-lubricated conditions, a suitable wiper that does not destroy the lubrication film on the piston rod must be used. In this case, we recommend our profile A2 wiper specially designed for pneumatics.

Note: For nominal diameters, ≤ 25 mm an open housing is recommended depending on the cross-section of the seal and the position of the groove (stuffing box installation).

d D H L Order code d D H L Order code
E5NBRN3578 30 40 6 6.5 E53039N3578
3 10 5 5.5 E50002N3578 30 40 7.5 8 E53040N3578
4 8 3 3.5 E50003N3578 32 42 7 7.5 E53264N3578
5 9 2.5 3 E50005N3578 35 45 7.5 8 E53545N3578
6 12 4 4.5 E50026N3578 40 48 8 9 E54048N3578
8 12.7 4.5 5 E50068N3578 40 50 7.5 8 E54050N3578
8 13 4 4.5 E50070N3578 42 52 7 7.5 E54205N3578
8 14 4 4.5 E50080N3578 44 54 7 7.5 E54454N3578
9 15 4.5 5 E50090N3578 45 55 7 7.5 E54555N3578
10 15 3.5 4 E51015N3578 50 60 7 7.5 E55060N3578
10 16 4.5 5 E51016N3578 54 64 7 7.5 E55464N3578
10 17 6 6.5 E51017N3578 55 70 11.5 12.5 E55570N3578
10 18 5 5.5 E51018N3578 56 66 7 7.5 E55666N3578
10 18 5.5 6 E51019N3578 63 75 7 7.5 E56372N3578
12 18 4.5 5 E51217N3578 63 75 8.5 9.5 E56375N3578
12 19 4.5 5 E51219N3578 70 80 7 7.5 E57080N3578
12 20 5.5 6 E51220N3578 80 92 8.5 9.5 E58092N3578
12 22 7.5 8 E51222N3578 E5TPUP5010
14 22 5 5.5 E51422N3578 10 18 5 5.5 E51018P5010
14 22 5.5 6 E51423N3578 12 20 5.5 6 E51220P5010
16 22 4 4.5 E51622N3578 20 30 7.5 8 E52030P5010
16 24 5.5 6 E51624N3578
16 26 7 7.5 E51626N3578
18 25 5 5.5 E51804N3578
18 26 5.5 6 E51805N3578
18 24 4 4.5 E51824N3578
20 28 5.5 6 E52028N3578
20 30 7.5 8 E52030N3578
20 32 7.5 8 E52032N3578
22 30 5.5 6 E52230N3578
22 32 6.5 7 E52232N3578
23 31 7 7.5 E52331N3578
25 35 7 7.5 E52534N3578
25 35 7.5 8 E52535N3578

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