Back-up rings are used in conjunction with O-ring for both static and dynamic sealing applications. They prevent extrusion of the O-ring when it is subjected to high pressures, or when the extrusion gaps are excessive. Wherever possible two Back-up rings should be used, one on each side of the O-ring.

Material Available To:

- PTFE
- PTFE + Graphite
- PTFE + Fiberglass
- Teflon

Application:
- Dynamic Sealing System with O-Ring
- High Pressure Sealing System