-427 BLACK BUNA 70D O-RING

APG stocks the H70MD427, an AS568-427 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 4.725 in (120.02 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 5.275 in (133.99 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Buna-N (Nitrile) is specified here for low compression set under sustained load, reliable performance in both static and dynamic service. This material stands up to greases and lubricants, propane and butane, and many alcohols. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to automotive brake fluid or polar solvents will shorten service life.

This o-ring is metal detectable for HACCP and foreign-body control programs. Maintenance and OEM teams specify it across fluid power, agricultural equipment, and hydraulic and pneumatic systems.

This item is sold individually under part number H70MD427. Nominal inside diameter is listed as 4 3/4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.