Q-221 BUNA 70 Q RING

Part number QH70221 is an AS568-221 black Buna-N (Nitrile) 70 Shore A quad profile Quad-Ring measuring an inside diameter of 1.421 in (36.09 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.699 in (43.15 mm). A quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

Buna-N (Nitrile) is known for reliable performance in both static and dynamic service, strong abrasion and tear resistance. This material stands up to greases and lubricants, propane and butane, and hydraulic fluids. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to strong acids or automotive brake fluid will shorten service life.

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

This item is sold individually under part number QH70221. Unit weight is approximately 1.4217 g and nominal inside diameter is listed as 1 7/16 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.