Engineered for demanding hydraulic and pneumatic sealing applications, this Buna-N (Nitrile) back-up ring delivers superior extrusion resistance in high-pressure systems. With a 90 Shore A durometer hardness rating, it provides the rigidity needed to prevent primary O-ring extrusion into clearance gaps — extending seal life and maintaining system integrity under sustained pressure.
Key Features
Material: Buna-N (Nitrile Rubber, NBR)
Durometer: 90 Shore A
Application: Hydraulic cylinders, pneumatic actuators, high-pressure fluid power systems
Compatibility: Petroleum-based oils, hydraulic fluids, water, and many industrial fluids
AS568 Compatible: Sized to complement standard AS568 O-ring dash numbers
Temperature Range: -40°F to +250°F
Pressure Rating: Suitable for high-pressure dynamic and static sealing applications
