4224-366Y MINNESOTA RUBBER QUAD RING

Part number HQ4224 is an AS568-224 black Buna-N (Nitrile) 70 Shore A Quad-Ring measuring an inside diameter of 1.734 in (44.04 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 2.012 in (51.1 mm). A quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

The material holds up against hydraulic fluids, propane and butane, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for low compression set under sustained load, reliable performance in both static and dynamic service. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It is not the right choice where ozone and direct sunlight or automotive brake fluid are present. The profile itself contributes a parting line located away from the sealing surface and lower compressive load required to achieve a seal.

Typical settings include fluid power, hydraulic and pneumatic systems, and agricultural equipment.

This item is sold individually under part number HQ4224. Nominal inside diameter is listed as 1 3/4 inch. Check the compound against your process media, pressure and temperature before committing to a design. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.