-357 BLACK BUNA 90D O-RING

The H90357 is an AS568-357 black Buna-N (Nitrile) 90 Shore A O-Ring measuring an inside diameter of 5.475 in (139.07 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.895 in (149.73 mm). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer and economical choice for high-volume maintenance programs. This material stands up to many alcohols, petroleum-based oils, and propane and butane. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in polar solvents or strong acids.

It sees regular use in hydraulic and pneumatic systems, construction equipment, and general industrial maintenance.

H90357 ships individually. Unit weight is approximately 14.064 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.