4MM CS X 13MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A with an inside diameter of 13 mm (0.512 in), a cross section of 4 mm (0.157 in), and an outside diameter of 21 mm (0.83 in), catalogued under part number H4X13. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Expect good resistance to hydraulic fluids, water, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, 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).

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

Order part number H4X13, sold individually. Unit weight is approximately 0.819 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.