5.3MM CS X 258MM ID BLACK BUNA 70D

H5.3X258 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 258 mm (10.157 in), a cross section of 5.3 mm (0.209 in), and an outside diameter of 268.6 mm (10.57 in). In service, this o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, reliable performance in both static and dynamic service. The material holds up against hydraulic fluids, propane and butane, and petroleum-based oils. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to ozone and direct sunlight or ketones will shorten service life.

Common environments for this compound include fluid power, automotive, and general industrial maintenance.

H5.3X258 ships individually. Unit weight is approximately 22.629 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.