-903 BLACK BUNA 90D O-RING

This o-ring is supplied in AS568-903 black Buna-N (Nitrile) 90 Shore A with an inside diameter of 0.301 in (7.65 mm), a cross section of 0.064 in (1.63 mm), and an outside diameter of 0.429 in (10.9 mm), catalogued under part number H90903. It remains the most cost-effective sealing element available for pressurized assemblies.

Buna-N (Nitrile) is valued for strong abrasion and tear resistance, reliable performance in both static and dynamic service. It resists hydraulic fluids, water, and greases and lubricants. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in polar solvents or ketones.

You will find this material specified across construction equipment, general industrial maintenance, and automotive.

Reference part number H90903 when ordering; the item is sold individually. Unit weight is approximately 0.082 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.