568-205 BUNA 70 SQUARE CUT RINGS

The SH70205 is an AS568-205 black Buna-N (Nitrile) 70 Shore A square profile Quad-Ring measuring an inside diameter of 0.421 in (10.69 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 0.699 in (17.75 mm). This quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

Expect good resistance to petroleum-based oils, many alcohols, and propane and butane. Buna-N (Nitrile) is specified for the most widely specified general-purpose sealing elastomer and an economical choice for high-volume maintenance programs. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving polar solvents or ozone and direct sunlight call for a different compound.

Common environments for this compound include agricultural equipment, general industrial maintenance, and construction equipment.

SH70205 ships individually. Nominal inside diameter is listed as 7/16 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.