8.4MM CS X 384.5MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A with an inside diameter of 384.5 mm (15.138 in), a cross section of 8.4 mm (0.331 in), and an outside diameter of 401.3 mm (15.8 in), catalogued under part number H8.4X384.5. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. This item is further identified as Metric O-RING, JIS P385.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, low compression set under sustained load. It resists propane and butane, hydraulic fluids, and many alcohols. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where polar solvents or ketones are present.

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

Stocked as H8.4X384.5 and sold individually. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.