-144 BLACK BUNA 70D X-RING

APG stocks the QH70144, an AS568-144 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 2.487 in (63.17 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.693 in (68.4 mm). A quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

Buna-N (Nitrile) delivers low compression set under sustained load, reliable performance in both static and dynamic service. The material holds up against hydraulic fluids, many alcohols, and petroleum-based oils. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to ketones or automotive brake fluid will shorten service life. The profile itself contributes lower compressive load required to achieve a seal and two sealing bands per contact face rather than one.

Common environments for this compound include construction equipment, automotive, and hydraulic and pneumatic systems.

Reference part number QH70144 when ordering; the item is sold individually. Unit weight is approximately 1.3015 g and nominal inside diameter is listed as 2 1/2 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.