STR 120X125X1.3-Y95A
Back-up ring

Back-up rings prevent gap extrusion of O-rings. In static radial sealing, back-up rings can be used to prevent the seal from pressing into the gap when pressure and temperature increase, and prevent extrusion damage and possibly even premature failure.

• Support O-rings
• If not in stock alternatives can be produced by SKF SEAL JET systems
• Prevent O-ring extrusion