1.78MM CS X 158MM ID BLACK BUNA 70D

The H1.78X158 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 158 mm (6.22 in), a cross section of 1.78 mm (0.07 in), and an outside diameter of 161.56 mm (6.36 in). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer and economical choice for high-volume maintenance programs. The material holds up against water, petroleum-based oils, and many alcohols. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where automotive brake fluid or strong acids are present.

You will find this material specified across agricultural equipment, construction equipment, and fluid power.

H1.78X158 ships individually. 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.