-042 BLACK BUNA 70D O-RING

This o-ring is supplied in AS568-042 black Buna-N (Nitrile) 70 Shore A with an inside diameter of 3.239 in (82.27 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 3.379 in (85.83 mm), catalogued under part number H70MD042. It remains the most cost-effective sealing element available for pressurized assemblies.

As a material, Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. This material stands up to petroleum-based oils, water, and greases and lubricants. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).

This o-ring is metal detectable for HACCP and foreign-body control programs. Maintenance and OEM teams specify it across construction equipment, general industrial maintenance, and automotive.

Stocked as H70MD042 and sold individually. Nominal inside diameter is listed as 3 1/4 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.