4MM CS X 138MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A built to an inside diameter of 138 mm (5.433 in), a cross section of 4 mm (0.157 in), and an outside diameter of 146 mm (5.75 in), catalogued under part number H4X138. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, most widely specified general-purpose sealing elastomer. The material holds up against propane and butane, many alcohols, and water. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C).

Common environments for this compound include construction equipment, automotive, and hydraulic and pneumatic systems.

Reference part number H4X138 when ordering; the item is sold individually. Unit weight is approximately 6.846 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.