Q-121 BUNA 70 Q RING

This quad-ring is supplied in AS568-121 black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 1.049 in (26.64 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.255 in (31.88 mm), catalogued under part number QH70121. It seats in a standard o-ring gland while offering improved dynamic performance.

Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. This material stands up to many alcohols, water, and petroleum-based oils. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Exposure to ketones or polar solvents will shorten service life. The profile itself contributes two sealing bands per contact face rather than one and resistance to the spiral twisting that defeats round-section rings.

You will find this material specified across agricultural equipment, construction equipment, and general industrial maintenance.

Stocked as QH70121 and sold individually. Unit weight is approximately 0.5813 g and nominal inside diameter is listed as 1 1/16 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.