8.4MM CS X 274.5MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 274.5 mm (10.807 in), a cross section of 8.4 mm (0.331 in), and an outside diameter of 291.3 mm (11.47 in), catalogued under part number H8.4X274.5. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. Additional detail on this item: Metric O-RING, JIS P275.

As a material, Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. The compound resists propane and butane, petroleum-based oils, and hydraulic fluids. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to strong acids or automotive brake fluid will shorten service life.

It sees regular use in hydraulic and pneumatic systems, agricultural equipment, and automotive.

Reference part number H8.4X274.5 when ordering; the item is sold individually. Unit weight is approximately 59.93 g. Check the compound against your process media, pressure and temperature before committing to a design. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.