5MM CS X 540MM ID BLACK BUNA 70D

H5X540 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 540 mm (21.26 in), a cross section of 5 mm (0.197 in), and an outside diameter of 550 mm (21.65 in). In service, this o-ring remains the most cost-effective sealing element available for pressurized assemblies.

This material stands up to propane and butane, water, and greases and lubricants. Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Exposure to ketones or automotive brake fluid will shorten service life.

Typical settings include agricultural equipment, general industrial maintenance, and automotive.

Stocked as H5X540 and sold individually. Unit weight is approximately 0.041 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.