-025 BLACK BUNA 70D O-RING

The H70025 is an AS568-025 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 1.176 in (29.87 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 1.316 in (33.43 mm). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

The compound resists petroleum-based oils, hydraulic fluids, and water. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, 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 strong acids or ketones are present.

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

This item is sold individually under part number H70025. Unit weight is approximately 0.312 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.