-240 BLACK BUNA 70D O-RING

Ordered as H70MD240, this is an AS568-240 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 3.734 in (94.84 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.012 in (101.9 mm). The o-ring remains the most cost-effective sealing element available for pressurized assemblies.

As a material, Buna-N (Nitrile) offers reliable performance in both static and dynamic service, strong abrasion and tear resistance. The material holds up against greases and lubricants, many alcohols, and hydraulic fluids. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ozone and direct sunlight or ketones are present.

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

This item is sold individually under part number H70MD240. Nominal inside diameter is listed as 3 3/4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.