Q-154 BUNA 70 Q RING

QH70154 is an AS568-154 black Buna-N (Nitrile) 70 Shore A Quad-Ring with an inside diameter of 3.737 in (94.92 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 3.943 in (100.15 mm). In service, this quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

The material holds up against petroleum-based oils, greases and lubricants, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. The profile itself contributes two sealing bands per contact face rather than one and a parting line located away from the sealing surface.

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

Stocked as QH70154 and sold individually. Unit weight is approximately 1.9617 g and nominal inside diameter is listed as 3 3/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.