-018 BLACK BUNA 70D O-RING

Part number H70MD018 is an AS568-018 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 0.739 in (18.77 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 0.879 in (22.33 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

As a material, Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, low compression set under sustained load. The material holds up against petroleum-based oils, propane and butane, and hydraulic fluids. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in automotive brake fluid or ozone and direct sunlight.

The compound is metal detectable for HACCP and foreign-body control programs. It sees regular use in construction equipment, fluid power, and general industrial maintenance.

H70MD018 ships individually. Nominal inside diameter is listed as 3/4 inch. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.