-380 BLACK BUNA 90D O-RING

Part number H90380 is an AS568-380 black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 11.475 in (291.47 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 11.895 in (302.13 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The material holds up against hydraulic fluids, many alcohols, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with polar solvents or ketones.

Common environments for this compound include hydraulic and pneumatic systems, fluid power, and general industrial maintenance.

Stocked as H90380 and sold individually. Unit weight is approximately 27.06 g and nominal inside diameter is listed as 11 1/2 inch. 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.