Q-207 BUNA 70 Q RING

APG stocks the QH70207, an AS568-207 black Buna-N (Nitrile) 70 Shore A Quad-Ring measuring an inside diameter of 0.546 in (13.87 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 0.824 in (20.93 mm). A quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs, strong abrasion and tear resistance. The compound resists greases and lubricants, propane and butane, and water. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving strong acids or ozone and direct sunlight call for a different compound. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and a parting line located away from the sealing surface.

Typical settings include construction equipment, general industrial maintenance, and agricultural equipment.

This item is sold individually under part number QH70207. Unit weight is approximately 0.6935 g and nominal inside diameter is listed as 9/16 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.