-371 BLACK BUNA 70D O-RING

Part number H70MD371 is an AS568-371 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 8.475 in (215.27 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 8.895 in (225.93 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, low compression set under sustained load. The compound resists propane and butane, water, and hydraulic fluids. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or strong acids.

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

Stocked as H70MD371 and sold individually. Review your operating media and conditions against this specification before installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.