Buna 70-327-Black-Pk50

Part number SB-H70327-50 is an AS568-327 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 1.725 in (43.82 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 2.145 in (54.48 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. Source specification: 2.125IDX1.75"ODX.1875"CS.

This material stands up to propane and butane, hydraulic fluids, and water. Buna-N (Nitrile) offers reliable performance in both static and dynamic service, low compression set under sustained load. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or strong acids.

Typical settings include hydraulic and pneumatic systems, construction equipment, and general industrial maintenance.

Stocked as SB-H70327-50 and sold by the bag. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.