-475 BLACK BUNA 50D O-RING

This o-ring is supplied in AS568-475 black Buna-N (Nitrile) 50 Shore A built to an inside diameter of 25.94 in (658.88 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 26.49 in (672.85 mm), catalogued under part number H50475. It delivers dependable bidirectional sealing in a compact groove envelope.

The material holds up against petroleum-based oils, water, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) is known for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in automotive brake fluid or strong acids.

You will find this material specified across general industrial maintenance, agricultural equipment, and hydraulic and pneumatic systems.

Reference part number H50475 when ordering; the item is sold individually. Nominal inside diameter is listed as 26 inch. Check the compound against your process media, pressure and temperature before committing to a design.