5MM CS X 56MM ID BLACK BUNA 70D

APG stocks the H5X56, a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 56 mm (2.205 in), a cross section of 5 mm (0.197 in), and an outside diameter of 66 mm (2.6 in). An o-ring compresses into its gland to block fluid or gas migration across a joint.

It resists water, hydraulic fluids, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for the most widely specified general-purpose sealing elastomer and an economical choice for high-volume maintenance programs. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It is not the right choice where ketones or automotive brake fluid are present.

Maintenance and OEM teams specify it across agricultural equipment, construction equipment, and automotive.

Stocked as H5X56 and sold individually. Unit weight is approximately 0.0047 g. Check the compound against your process media, pressure and temperature before committing to a design.