Q-227 BUNA 70 Q RING

Part number QH70227 is an AS568-227 black Buna-N (Nitrile) 70 Shore A Quad-Ring built to an inside diameter of 2.109 in (53.57 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 2.387 in (60.63 mm). A quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. The compound resists many alcohols, greases and lubricants, and propane and butane. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Exposure to strong acids or polar solvents will shorten service life. The profile itself contributes two sealing bands per contact face rather than one and resistance to the spiral twisting that defeats round-section rings.

Maintenance and OEM teams specify it across automotive, agricultural equipment, and construction equipment.

Stocked as QH70227 and sold individually. Unit weight is approximately 2.259 g and nominal inside diameter is listed as 2 1/8 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.