RP-78
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Rod / Piston Seal PU O‑ring NBR 70 Type: RP-78
Dimensions: 10 x 18 x 6 x 5Part number: 6537883Delivery time: ± 8 weeksMore Details - Rod / Piston Seal PU O‑ring NBR 70 Type: RP-78
Dimensions: 10 x 20 x 9 x 8Part number: 6537890Delivery time: ± 8 weeksMore Details - Rod / Piston Seal PU O‑ring NBR 70 Type: RP-78
Dimensions: 10 x 22 x 9 x 8Part number: 6537892Delivery time: ± 8 weeksMore Details - Rod / Piston Seal PU O‑ring NBR 70 Type: RP-78
Dimensions: 100 x 115 x 10 x 9Part number: 6538621Delivery time: ± 8 weeksMore Details - Rod / Piston Seal PU O‑ring NBR 70 Type: RP-78
Dimensions: 100 x 115 x 13 x 12Part number: 6538627Delivery time: ± 8 weeksMore Details - Rod / Piston Seal PU O‑ring NBR 70 Type: RP-78
Dimensions: 100 x 120 x 13 x 12Part number: 6538630Delivery time: ± 8 weeksMore Details
RP-78
Description
The RP-78 is the natural further development of the RP-70 seal. This is a high performance all purpose lipseal suitable for boht rod an piston which combines the advantage pf a highly elastic rubber and the abrasion resistance of polyurethane.
This profile assures a good reaction against shock pressure peaks and low friction in all conditions.
The energizing O-ring guarantees a good sealing performance in the low pressure range. The material used to produce this seal is a polyurethane compound that ensures excellen properties on wear resistance, extended service lif and resistance against extrution.
Product advantages
- good sealing performance also with low pressure
- suitable for both rod and piston
- economical solution
- excellent wear resistance
- extended service life
- high resistance against extrusion
- good temperature resistance
- easy installation without expensive auxiliaries
Operation conditions
| Temperature (min.) °C | -40 |
| Temperature (max.) °C | +100 |
| Pressure Bar | ≤400 |
| Speed m/sec | ≤0,5 |
Surface roughness
| Surface roughness | Ra | Rmax |
| Sliding Surface ØD-Ød | ≤0.4 μm | ≤3.2 μm |
| Groove Base ØDb-Ødp | ≤1.8 μm | ≤6.3 μm |
| Groove Flanks B | ≤3.2 μm | ≤16 μm |
The largest gap dimension on non-pressure side
| Bar | Gap in mm. |
| 50 | 1,2 |
| 100 | 0,8 |
| 200 | 0,4 |
| 300 | 0,25 |
| 400 | 0,17 |
Sizes
| Seal Supply | d1 f8, d f7 | D1 H10, D10 H10 | L +0,25 | M |
| 6537925 | 14,00 | 27,00 | 8,00 | 7,00 |
| 6566111 | 20,00 | 28,00 | 6,20 | 5,70 |
| 6537996 | 20,00 | 29,00 | 5,50 | 5,00 |
| 6531720 | 25,00 | 35,00 | 5,50 | 5,00 |
| 6531744 | 35,00 | 45,00 | 7,00 | 6,00 |
| 6531719 | 35,00 | 45,00 | 11,00 | 10,00 |
| 6566108 | 38,10 | 50,80 | 7,35 | 6,35 |
| 6531722 | 40,00 | 50,00 | 9,00 | 8,00 |
| 6531721 | 45,00 | 55,00 | 11,00 | 10,00 |
| 6538325 | 50,00 | 60,00 | 8,00 | 7,00 |
| 6566116 | 50,80 | 63,50 | 7,35 | 6,35 |
| 6566117 | 50,80 | 66,67 | 15,28 | 14,28 |
| 6531723 | 55,00 | 65,00 | 7,00 | 6,00 |
| 6566119 | 57,15 | 66,67 | 10,52 | 9,52 |
| 6538409 | 60,00 | 70,00 | 11,00 | 10,00 |
| 6531717 | 60,00 | 80,00 | 11,00 | 10,00 |
| 6566124 | 63,50 | 82,55 | 16,87 | 15,87 |
| 6566125 | 66,67 | 76,20 | 5,26 | 4,76 |
| 6531714 | 70,00 | 80,00 | 13,00 | 12,00 |
| 6531718 | 70,00 | 85,00 | 12,00 | 11,00 |
| 6531716 | 70,00 | 80,00 | 9,00 | 8,00 |
| 6566126 | 76,20 | 92,07 | 15,28 | 14,28 |
| 6566127 | 76,20 | 95,25 | 16,87 | 15,87 |
| 6531715 | 80,00 | 100,00 | 10,50 | 9,50 |
| 6566130 | 88,90 | 101,60 | 10,52 | 9,52 |
| 6566129 | 88,90 | 95,42 | 10,52 | 9,52 |
| 6566131 | 88,90 | 107,95 | 16,87 | 15,87 |
| 6566133 | 98,42 | 107,95 | 5,26 | 4,76 |
| 6566135 | 133,35 | 152,40 | 16,87 | 15,87 |
| 6538714 | 140,00 | 160,00 | 16,00 | 15,00 |
| 6566137 | 158,75 | 177,80 | 16,87 | 15,87 |
| 6566142 | 177,80 | 203,20 | 20,05 | 19,05 |
