4MM CS X 272MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A supplied with an inside diameter of 272 mm (10.709 in), a cross section of 4 mm (0.157 in), and an outside diameter of 280 mm (11.02 in), catalogued under part number H4X272. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

As a material, Buna-N (Nitrile) delivers the most widely specified general-purpose sealing elastomer and low compression set under sustained load. This material stands up to many alcohols, water, and petroleum-based oils. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It is not the right choice where ozone and direct sunlight or polar solvents are present.

It sees regular use in construction equipment, fluid power, and general industrial maintenance.

Reference part number H4X272 when ordering; the item is sold individually. 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.