Q-268 BUNA 70 Q RING

Ordered as QH70268, this is an AS568-268 black Buna-N (Nitrile) 70 Shore A quad profile Quad-Ring with an inside diameter of 8.484 in (215.49 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 8.762 in (222.55 mm). The quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

Buna-N (Nitrile) is valued for low compression set under sustained load, reliable performance in both static and dynamic service. The material holds up against propane and butane, greases and lubricants, and many alcohols. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to ozone and direct sunlight or polar solvents will shorten service life.

Typical settings include fluid power, hydraulic and pneumatic systems, and automotive.

Stocked as QH70268 and sold individually. Unit weight is approximately 8.1299 g and nominal inside diameter is listed as 8 1/2 inch. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.