Q-272 BUNA 70 Q RING

Ordered as QH70272, this is an AS568-272 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 9.484 in (240.89 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 9.762 in (247.95 mm). The quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

As a material, Buna-N (Nitrile) is specified for low compression set under sustained load and the most widely specified general-purpose sealing elastomer. It resists water, greases and lubricants, and propane and butane. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). The profile itself contributes two sealing bands per contact face rather than one and a parting line located away from the sealing surface.

Typical settings include general industrial maintenance, automotive, and hydraulic and pneumatic systems.

This item is sold individually under part number QH70272. Unit weight is approximately 9.752 g. Check the compound against your process media, pressure and temperature before committing to a design. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.