PEEK Anti-Extrusion Rings

                                 PEEK Anti-extrusion rings

Anti-extrusion rings, also known as backup rings, are used in conjunction with o rings in high-pressure applications as this particular type of ring seal provides relative diametrical play and can reduce the level of friction. Back-up rings are used to extend the operating pressure of an O-ring. Either one or two back-up rings are co-located within a groove of increased width, on the low-pressure side of the seal.

Anti-extrusion rings provide added extrusion resistance and prevent damage to O-rings and seals when subjected to high pressures, larger extrusion gaps, and/or high temperatures.

The use of back-up rings can significantly increase the pressure rating of seals.

When we use o rings as seals in applications where pressure levels are high, extrusion of the seal can become a risk factor., the o ring begins to extrude from the housing, causing physical damage to the seal, making the seal no longer fit for purpose.Therefore, an anti-extrusion ring will be required to prevent the o ring from moving and causing extrusion in these instances. Anti-extrusion rings or backup rings are designed to prevent extrusion in rubber or polymer o-ring sealing systems.

PEEK is a semi-crystalline, show high stiffness and hardness, has an unique high tensile strength and With a continuous service temperature of 260 ℃, PEEK is used for backup rings for O-rings under high pressure or as a v-packing support ring or thrust ring.

Depending on the application requirements, our backup rings are made of PEEK, carbon PEEK, Virin PTFE, filled PTFE.

HONGDA is the professional manufacturer of PEEK Anti-extrusion rings or PTFE back-up rings in China, our products help to reduce cost and ensure long-term functional service.

PEEK Anti-extrusion rings, also known as backup rings, are used in conjunction with o rings in high-pressure applications as this particular type of ring seal provides relative diametrical play and can reduce the level of friction.

Anti-extrusion rings are widely used in the following industries:

● Abrasive Substance Pumps and Valves

● Pharmaceuticals

● Oil-Field Exploration and Production

● Paint and Solvent Manufacture and Application

● Adhesives Dispensing Valves and Cylinders

● Chemical Pumps

● Cryogenic Liquid Control Components

● Liquid Handling Swivel Joints

● Hydraulics

● Drilling Equipment

● Chemical Pumps and Valves