Q-029 BUNA 70 Q RING

QH70029 is an AS568-029 black Buna-N (Nitrile) 70 Shore A Quad-Ring with an inside diameter of 1.489 in (37.82 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 1.629 in (41.38 mm). In service, this quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer and low compression set under sustained load. The compound resists propane and butane, water, and hydraulic fluids. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Exposure to strong acids or automotive brake fluid will shorten service life. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and a parting line located away from the sealing surface.

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

This item is sold individually under part number QH70029. Unit weight is approximately 0.387 g. 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.