Manufactured with the sintering process, PTFE backup rings feature high temperature resistance, corrosion resistance, good electrical insulation, and high dimensional stability. A backup ring is used to install between the o-ring and the extrusion gap, enabling it to prevent the extrusion of the o-ring. Extrusion failure is a common occurrence in the fluid systems when it is subject to high pressures. Therefore, the backup ring plays a great role in preventing o-rings and seals against damages. Adopting high quality backup rings can avoid seal failure to the maximum extent.

As an experienced hydraulic seal replacement manufacturer, we are confident to provide you superior quality backup rings to prevent extrusion of the o-rings and seals. Backup rings can be manufactured in a wide range of standard and non-standard specifications to suit for almost all sealing applications.

• Improved sealing force due to high dimensional stability
• Protects o-rings and other seals against extrusion
• Prevents damage to o-rings and seals
• Increases the service life of seals

• Hydraulic cylinders
• Hydraulic and pneumatic systems
• High-pressure valves
• Pumping systems