Q-262 BUNA 70 Q RING

APG stocks the QH70262, an AS568-262 black Buna-N (Nitrile) 70 Shore A Quad-Ring measuring an inside diameter of 6.984 in (177.39 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 7.262 in (184.45 mm). A quad-ring provides a dual sealing band on each contact face for improved reliability.

This material stands up to many alcohols, petroleum-based oils, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for low compression set under sustained load, reliable performance in both static and dynamic service. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). The profile itself contributes two sealing bands per contact face rather than one and resistance to the spiral twisting that defeats round-section rings.

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

This item is sold individually under part number QH70262. Unit weight is approximately 6.6242 g and nominal inside diameter is listed as 7 inch. Review your operating media and conditions against this specification before installation.