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 ...

3P’s pistons rings, bands or back-up rings are used in lubricated or dry-running conditions, where wear rate, friction and sealing are the most important performances. The anti-extrusion rings are used in dynamic and static sealings, ...

K81 back-up rings are sealing elements that are generally used behind the o-ring in order to ensure system security and minimize extrusion gaps in many applications. Advantages • Extrusion resistance in larger gap clearance • Easy ...

The mission of the back-up or anti-extrusion rings is to prevent the static seal from entering the existing gap between the two parts to be sealed and damaged when extruded due to the pressure of the system. The back-up rings are used ...

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 ...