Q-022 BUNA 70 Q RING

This quad-ring is supplied in AS568-022 black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 0.989 in (25.12 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 1.129 in (28.68 mm), catalogued under part number QH70022. It seats in a standard o-ring gland while offering improved dynamic performance.

The compound resists propane and butane, hydraulic fluids, and water. Buna-N (Nitrile) is widely chosen for low compression set under sustained load, strong abrasion and tear resistance. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving ketones or polar solvents call for a different compound. The profile itself contributes two sealing bands per contact face rather than one and lower compressive load required to achieve a seal.

You will find this material specified across fluid power, automotive, and general industrial maintenance.

Reference part number QH70022 when ordering; the item is sold individually. Unit weight is approximately 0.286 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.