Q-370 BUNA 70 Q RING

Part number QH70370 is an AS568-370 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 8.225 in (208.92 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 8.645 in (219.58 mm). A quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

The compound resists many alcohols, greases and lubricants, and hydraulic fluids. Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). The profile itself contributes lower compressive load required to achieve a seal and two sealing bands per contact face rather than one.

Common environments for this compound include automotive, general industrial maintenance, and hydraulic and pneumatic systems.

This item is sold individually under part number QH70370. Unit weight is approximately 19.7 g and nominal inside diameter is listed as 8 1/4 inch. 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.