-250 BLACK BUNA 70D O-RING

The H70MD250 is an AS568-250 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 4.984 in (126.59 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.262 in (133.65 mm). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

This material stands up to hydraulic fluids, greases and lubricants, and propane and butane. Buna-N (Nitrile) is valued for low compression set under sustained load, reliable performance in both static and dynamic service. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Verify compatibility before use with strong acids or polar solvents.

The compound is metal detectable for HACCP and foreign-body control programs. You will find this material specified across agricultural equipment, automotive, and hydraulic and pneumatic systems.

This item is sold individually under part number H70MD250. Nominal inside diameter is listed as 5 inch. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.