Q-032 BUNA 70 Q RING

QH70032 is an AS568-032 black Buna-N (Nitrile) 70 Shore A Quad-Ring built to an inside diameter of 1.864 in (47.35 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 2.004 in (50.9 mm). In service, this quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

Buna-N (Nitrile) is widely chosen for strong abrasion and tear resistance, low compression set under sustained load. It resists hydraulic fluids, 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). It is not the right choice where automotive brake fluid or ozone and direct sunlight are present. The profile itself contributes lower compressive load required to achieve a seal and a parting line located away from the sealing surface.

Maintenance and OEM teams specify it across fluid power, hydraulic and pneumatic systems, and agricultural equipment.

Stocked as QH70032 and sold individually. Unit weight is approximately 0.53 g. Review your operating media and conditions against this specification before installation.