5.3MM CS X 51.5MM ID BLACK BUNA 70D

H5.3X51.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 51.5 mm (2.028 in), a cross section of 5.3 mm (0.209 in), and an outside diameter of 62.1 mm (2.44 in). In service, this o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

The material holds up against many alcohols, greases and lubricants, and water. Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, strong abrasion and tear resistance. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving ozone and direct sunlight or strong acids call for a different compound.

It sees regular use in agricultural equipment, general industrial maintenance, and fluid power.

Reference part number H5.3X51.5 when ordering; the item is sold individually. Unit weight is approximately 4.8312 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.