-351 BLACK BUNA 70D O-RING

APG stocks the H70MD351, an AS568-351 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 4.725 in (120.02 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.145 in (130.68 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The compound resists greases and lubricants, hydraulic fluids, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ozone and direct sunlight or polar solvents.

This item is metal detectable for HACCP and foreign-body control programs. You will find this material specified across general industrial maintenance, fluid power, and automotive.

Reference part number H70MD351 when ordering; the item is sold individually. Review your operating media and conditions against this specification before installation.