-135 BLACK BUNA 70D O-RING

Part number H70MD135 is an AS568-135 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 1.925 in (48.9 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.131 in (54.13 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The material holds up against water, petroleum-based oils, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) is known for low compression set under sustained load and the most widely specified general-purpose sealing elastomer. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with polar solvents or strong acids.

This item is metal detectable for HACCP and foreign-body control programs. It sees regular use in general industrial maintenance, construction equipment, and hydraulic and pneumatic systems.

H70MD135 ships individually. Review your operating media and conditions against this specification before installation.