Q-126 BUNA 70 Q RING

Part number QH70126 is an AS568-126 black Buna-N (Nitrile) 70 Shore A Quad-Ring measuring an inside diameter of 1.362 in (34.59 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.568 in (39.83 mm). A quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

Expect good resistance to propane and butane, water, and greases and lubricants. Buna-N (Nitrile) is known for reliable performance in both static and dynamic service, low compression set under sustained load. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or polar solvents. The profile itself contributes two sealing bands per contact face rather than one and resistance to the spiral twisting that defeats round-section rings.

It sees regular use in construction equipment, agricultural equipment, and general industrial maintenance.

This item is sold individually under part number QH70126. Unit weight is approximately 0.782 g and nominal inside diameter is listed as 1 3/8 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.