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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