-028 BLACK BUNA 70D O-RING

Ordered as H70028, this is an AS568-028 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 1.364 in (34.65 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 1.504 in (38.2 mm). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

The material holds up against hydraulic fluids, propane and butane, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) delivers reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Exposure to automotive brake fluid or polar solvents will shorten service life.

You will find this material specified across general industrial maintenance, construction equipment, and hydraulic and pneumatic systems.

Order part number H70028, sold individually. Unit weight is approximately 0.3568 g. Check the compound against your process media, pressure and temperature before committing to a design.