Q-350 BUNA 70 Q RING

APG stocks the QH70350, an AS568-350 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 4.6 in (116.84 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.02 in (127.51 mm). A quad-ring provides a dual sealing band on each contact face for improved reliability.

Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, strong abrasion and tear resistance. This material stands up to greases and lubricants, water, and many alcohols. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where strong acids or ketones are present. The profile itself contributes two sealing bands per contact face rather than one and lower compressive load required to achieve a seal.

It sees regular use in fluid power, construction equipment, and automotive.

Stocked as QH70350 and sold individually. Unit weight is approximately 10.481 g and nominal inside diameter is listed as 4 5/8 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.