Q-260 BUNA 70 Q RING

The QH70260 is an AS568-260 black Buna-N (Nitrile) 70 Shore A Quad-Ring with an inside diameter of 6.484 in (164.69 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 6.762 in (171.75 mm). This quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

The material holds up against many alcohols, hydraulic fluids, and water. That behavior comes from the compound itself: Buna-N (Nitrile) offers strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in automotive brake fluid 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.

Common environments for this compound include fluid power, construction equipment, and automotive.

Order part number QH70260, sold individually. Unit weight is approximately 6.2983 g and nominal inside diameter is listed as 6 1/2 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.