Q-232 BUNA 70 Q RING

Ordered as QH70232, this is an AS568-232 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 2.734 in (69.44 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 3.012 in (76.5 mm). The quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

The compound resists propane and butane, many alcohols, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) is known for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ketones or polar solvents. The profile itself contributes a parting line located away from the sealing surface and lower compressive load required to achieve a seal.

It sees regular use in general industrial maintenance, automotive, and agricultural equipment.

Order part number QH70232, sold individually. Unit weight is approximately 2.72 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. 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.