Downhole PEEK back-up rings
JST's back up ring compensate for large temperature fluctuations. Using Back-up Rings allows O-Rings to be utilized in higher pressure applications, where larger extrusion gaps are required and where there are reciprocating or rotating movements.
Back-up Rings are protective and supporting elements with no sealing function.
The back up ring material could be PEEK, modified PTFE.
Downhole PEEK back-up rings
JST's back up ring compensate for large temperature fluctuations. Using Back-up Rings allows O-Rings to be utilized in higher pressure applications, where larger extrusion gaps are required and where there are reciprocating or rotating movements.
Back-up Rings are protective and supporting elements with no sealing function.
The back up ring material could be PEEK, modified PTFE.
![]() |
Advantages:
1. Prevents O-Ring extrusion. |
Working Conditions |
||
Working Pressure |
Temp range |
Media |
≤10000PSI |
≤350°F |
Compatible with virtually all media and gases |
Size:
59.23X55.27X2.29mm