Q-050 BUNA 70 Q RING

The QH70050 is an AS568-050 black Buna-N (Nitrile) 70 Shore A Quad-Ring measuring an inside diameter of 5.239 in (133.07 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 5.379 in (136.63 mm). This quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

This material stands up to many alcohols, petroleum-based oils, and propane and butane. Buna-N (Nitrile) is specified for the most widely specified general-purpose sealing elastomer and an economical choice for high-volume maintenance programs. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). The profile itself contributes lower compressive load required to achieve a seal and two sealing bands per contact face rather than one.

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

This item is sold individually under part number QH70050. Unit weight is approximately 1.3061 g and nominal inside diameter is listed as 5 1/4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.