-025 BLACK BUNA 90D O-RING

This o-ring is supplied in AS568-025 black Buna-N (Nitrile) 90 Shore A with an inside diameter of 1.176 in (29.87 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 1.316 in (33.43 mm), catalogued under part number H90025. It remains the most cost-effective sealing element available for pressurized assemblies.

Expect good resistance to many alcohols, petroleum-based oils, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, low compression set under sustained load. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Exposure to strong acids or ketones will shorten service life.

You will find this material specified across fluid power, agricultural equipment, and automotive.

Order part number H90025, sold individually. Unit weight is approximately 0.3302 g and nominal inside diameter is listed as 1 3/16 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.