-248 BLACK BUNA 90D O-RING

This o-ring is supplied in AS568-248 black Buna-N (Nitrile) 90 Shore A built to an inside diameter of 4.734 in (120.24 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.012 in (127.3 mm), catalogued under part number H90248. It remains the most cost-effective sealing element available for pressurized assemblies.

As a material, Buna-N (Nitrile) is known for an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. Expect good resistance to water, propane and butane, and petroleum-based oils. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to ozone and direct sunlight or strong acids will shorten service life.

Maintenance and OEM teams specify it across hydraulic and pneumatic systems, automotive, and fluid power.

H90248 ships individually. Unit weight is approximately 5.005 g. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.