Q-143 BUNA 70 Q RING

APG stocks the QH70143, an AS568-143 black Buna-N (Nitrile) 70 Shore A Quad-Ring measuring an inside diameter of 2.425 in (61.6 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.631 in (66.83 mm). A quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

Buna-N (Nitrile) offers strong abrasion and tear resistance, reliable performance in both static and dynamic service. Expect good resistance to petroleum-based oils, propane and butane, and greases and lubricants. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Applications involving ketones or strong acids call for a different compound. The profile itself contributes lower compressive load required to achieve a seal and a parting line located away from the sealing surface.

Common environments for this compound include fluid power, general industrial maintenance, and construction equipment.

QH70143 ships individually. Unit weight is approximately 1.2759 g. Review your operating media and conditions against this specification before installation.