-475 BLACK BUNA 70D O-RING

This o-ring is supplied in AS568-475 black Buna-N (Nitrile) 70 Shore A supplied with an inside diameter of 25.94 in (658.88 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 26.49 in (672.85 mm), catalogued under part number H70MD475. It creates a positive seal at flange, piston and rod interfaces without added hardware.

This material stands up to many alcohols, water, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is known for reliable performance in both static and dynamic service, low compression set under sustained load. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C).

This item is metal detectable for HACCP and foreign-body control programs. Maintenance and OEM teams specify it across hydraulic and pneumatic systems, general industrial maintenance, and automotive.

H70MD475 ships individually. Nominal inside diameter is listed as 26 inch. Check the compound against your process media, pressure and temperature before committing to a design.