568-045 BUNA 70 SQUARE CUT RINGS

APG stocks the SH70045, an AS568-045 black Buna-N (Nitrile) 70 Shore A square profile Quad-Ring built to an inside diameter of 3.989 in (101.32 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 4.129 in (104.88 mm). A quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

The material holds up against propane and butane, water, and greases and lubricants. Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving polar solvents or automotive brake fluid call for a different compound.

Typical settings include general industrial maintenance, agricultural equipment, and fluid power.

Reference part number SH70045 when ordering; the item is sold individually. Unit weight is approximately 1.021 g and nominal inside diameter is listed as 4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.