Q-033 BUNA 70 Q RING

APG stocks the QH70033, an AS568-033 black Buna-N (Nitrile) 70 Shore A Quad-Ring with an inside diameter of 1.989 in (50.52 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 2.129 in (54.08 mm). A quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

As a material, Buna-N (Nitrile) is known for low compression set under sustained load and an economical choice for high-volume maintenance programs. The material holds up against propane and butane, hydraulic fluids, and many alcohols. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). The profile itself contributes a parting line located away from the sealing surface and resistance to the spiral twisting that defeats round-section rings.

Typical settings include general industrial maintenance, agricultural equipment, and construction equipment.

This item is sold individually under part number QH70033. Unit weight is approximately 0.51 g and nominal inside diameter is listed as 2 inch. Check the compound against your process media, pressure and temperature before committing to a design.