1MM CS X 21.5MM ID BLACK BUNA 70D

Ordered as H1X21.5, this is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 21.5 mm (0.846 in), a cross section of 1 mm (0.039 in), and an outside diameter of 23.5 mm (0.93 in). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

It resists petroleum-based oils, propane and butane, and hydraulic fluids. Buna-N (Nitrile) delivers strong abrasion and tear resistance, reliable performance in both static and dynamic service. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where polar solvents or ketones are present.

You will find this material specified across fluid power, construction equipment, and automotive.

H1X21.5 ships individually. Unit weight is approximately 0.0686 g. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.