Q-265 BUNA 70 Q RING

This quad-ring is supplied in AS568-265 black Buna-N (Nitrile) 70 Shore A supplied with an inside diameter of 7.734 in (196.44 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 8.012 in (203.5 mm), catalogued under part number QH70265. It uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

It resists many alcohols, greases and lubricants, and propane and butane. Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs and low compression set under sustained load. 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 strong acids or automotive brake fluid. The profile itself contributes a parting line located away from the sealing surface and lower compressive load required to achieve a seal.

You will find this material specified across hydraulic and pneumatic systems, general industrial maintenance, and automotive.

Reference part number QH70265 when ordering; the item is sold individually. Unit weight is approximately 7.2251 g and nominal inside diameter is listed as 7 3/4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.