8MM CS X 57MM ID BLACK BUNA 70D

H8X57 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 57 mm (2.244 in), a cross section of 8 mm (0.315 in), and an outside diameter of 73 mm (2.87 in). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The material holds up against hydraulic fluids, petroleum-based oils, and greases and lubricants. Buna-N (Nitrile) offers the most widely specified general-purpose sealing elastomer and an economical choice for high-volume maintenance programs. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with polar solvents or automotive brake fluid.

It sees regular use in automotive, construction equipment, and agricultural equipment.

Reference part number H8X57 when ordering; the item is sold individually. Check the compound against your process media, pressure and temperature before committing to a design.