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Description
The rod style unloaded twin lip U-cup features a secondary “bump” or lip on the inside heel of the seal that provides additional stability in the seal groove. The increased stability enhances the long-term performance of the seal. In rod seal leakage tests, the twin lip rod U-cup had better performance than the conventional U-cup. This is due to the initial leakage of the seal being reduced by the secondary sealing lip.
| Application | Dynamic reciprocating applications and low pressure piston & rod applications. |
| Height | 3/8 |
| Outside Diameter | 4 |
| Inside Diameter | 3 1/2 |
| Groove Width | 0.413 |
| Piston Bore | 4 |
| Piston Width | 4 |
| Piston Groove | 3 1/2 |
| Rod Width | 3 1/2 |
| Rod Throat | 3 1/2 |
| Rod Groove | 4 |
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