HPSI
This u-cup style buffer ring offers an asymmetric sealing lip profile, chamfered sealing edges, and pressure relieving capabilities to prevent inner pressure entrapment when employed in a tandem sealing system. The RB rod buffer seal is designed to absorb impact pressure fluctuations under high-load conditions, thus increasing the life of the primary seal. RB buffers with "BU" suffix utilize polyacetal back-up rings where standard RBs do not.
| Groove Diameter | : | 4.616 in |
| Inside Diameter | : | 4 in |
| Material | : | Urethane/Polyacetal |
| Part Number | : | (Prefix)-(C/S)(ID) |
| Pressure Range | : | 0 TO 8,000 PSI |
| Temperature Range | : | -40° to 230°F |
| Width | : | 0.235 in |
- RB style
- U-cup design
- High load
