PTFE back-up rings

When a part of an O-ring comes out of its groove and gets lodged in the gap between the two sealing elements, it is referred to as extrusion. This phenomenon compromises the seal and leads to rapid deterioration of the O-ring. In combination ...

The anti-extrusion rings are used in dynamic and static sealings, for applications of rods or pistons. Their function is to reduce the seal creep(ring or four lobes) when the pressures and mechanical play is important. There are three ...

Reliably Prevent Gap Extrusion Back-up rings do not have a sealing function but are used to prevent gap extrusion. They can be used in combination with O-rings or X-rings, both for static and dynamic loads. Back-up rings prevent the ...

Specification There are three basic types of PTFE back-up rings in use. They are single turn (scarf out), multi-turn(spiral cut), and solid (uncut) configurations. We have the ability to provide PTFE back-up ring for ...

Back-up rings are manufactured from extrusion resistant material as protection and support elements, normally with a rectangular cross-section. For static applications they are used together with an elastomer seal – usually an O-ring ...