8. Parbak - Back up rings - O-Rings-Stock O-Ring Webshop
Global O-Ring and Seal, LLC - Requesting for backup? We have backup rings readily available in NBR, Viton, and Teflon (Solid, Split, and Spiral versions). Use our Backup Ring Size Chart here
O-rings and back-up rings | SKF
ST373 | Global O-Ring and Seal
BACKUP RINGS Part # MS28774-012 | Allegheny York
BackUps - Varigate Technologies Inc.
BV / BU 64x69x2 / 37.5x40x2 / 42x48x1.5 Back-up seal Flat white PTFE Backup Ring washer gasket - AliExpress
BACKUP RING SEAL
Backup Rings - Sigma Seals & Gaskets
Case Study: Benefits of a Contoured Back-Up Ring | Marco Rubber and Plastics