Q-353 BUNA 70 Q RING

Part number QH70353 is an AS568-353 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 4.975 in (126.37 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.395 in (137.03 mm). A quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

The material holds up against many alcohols, greases and lubricants, and propane and butane. Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in strong acids or automotive brake fluid. The profile itself contributes lower compressive load required to achieve a seal and resistance to the spiral twisting that defeats round-section rings.

Typical settings include hydraulic and pneumatic systems, construction equipment, and automotive.

This item is sold individually under part number QH70353. Unit weight is approximately 11.228 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.