5.7MM CS X 77.2MM ID BLACK BUNA 70D

H5.7X77.2 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 77.2 mm (3.039 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 88.6 mm (3.49 in). In service, this o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

As a material, Buna-N (Nitrile) delivers strong abrasion and tear resistance, reliable performance in both static and dynamic service. The material holds up against many alcohols, petroleum-based oils, and water. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving strong acids or polar solvents call for a different compound.

You will find this material specified across hydraulic and pneumatic systems, fluid power, and automotive.

Order part number H5.7X77.2, sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.