Q-016 BUNA 70 Q RING

The QH70016 is an AS568-016 black Buna-N (Nitrile) 70 Shore A Quad-Ring with an inside diameter of 0.614 in (15.6 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 0.754 in (19.15 mm). This quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

As a material, Buna-N (Nitrile) is specified for low compression set under sustained load, strong abrasion and tear resistance. Expect good resistance to greases and lubricants, petroleum-based oils, and propane and butane. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Applications involving automotive brake fluid or ketones call for a different compound. The profile itself contributes a parting line located away from the sealing surface and lower compressive load required to achieve a seal.

It sees regular use in hydraulic and pneumatic systems, general industrial maintenance, and construction equipment.

Order part number QH70016, sold individually. Unit weight is approximately 0.1661 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.