Q-135 BUNA 70 Q RING

Part number QH70135 is an AS568-135 black Buna-N (Nitrile) 70 Shore A Quad-Ring built to an inside diameter of 1.925 in (48.9 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.131 in (54.13 mm). A quad-ring provides a dual sealing band on each contact face for improved reliability.

This material stands up to many alcohols, water, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for strong abrasion and tear resistance, reliable performance in both static and dynamic service. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Applications involving ketones or polar solvents call for a different compound. The profile itself contributes lower compressive load required to achieve a seal and a parting line located away from the sealing surface.

It sees regular use in fluid power, general industrial maintenance, and hydraulic and pneumatic systems.

This item is sold individually under part number QH70135. Unit weight is approximately 1.065 g. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.