-423 BLACK BUNA 50D O-RING

APG stocks the H50423, an AS568-423 black Buna-N (Nitrile) 50 Shore A O-Ring measuring an inside diameter of 4.225 in (107.32 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 4.775 in (121.29 mm). An 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 low compression set under sustained load, reliable performance in both static and dynamic service. This material stands up to petroleum-based oils, hydraulic fluids, and propane and butane. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving ketones or ozone and direct sunlight call for a different compound.

Common environments for this compound include automotive, general industrial maintenance, and fluid power.

Stocked as H50423 and sold individually. Nominal inside diameter is listed as 4 1/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.