568-154 BUNA 70 SQUARE CUT RINGS

This quad-ring is supplied in AS568-154 black Buna-N (Nitrile) 70 Shore A square profile built to an inside diameter of 3.737 in (94.92 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 3.943 in (100.15 mm), catalogued under part number SH70154. It resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

The compound resists many alcohols, water, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) offers reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It should not be specified for service in ozone and direct sunlight or polar solvents.

Common environments for this compound include agricultural equipment, automotive, and fluid power.

Order part number SH70154, sold individually. Unit weight is approximately 2.027 g and nominal inside diameter is listed as 3 3/4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.