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.

• Extrusion resistance in larger gap clearance
• Easy installation
• Can be used at high pressure
• Wide range of dimensions

• Agricultural machinery
• Construction machinery
• Loading platforms
• Injection moulding machines
• Forklifts
• Standard industrial cylinders