**4106-366Y MINNESOTA RUBBER QUAD RING

APG stocks the HQ4106, an AS568-106 black Buna-N (Nitrile) 70 Shore A Quad-Ring built to an inside diameter of 0.174 in (4.42 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 0.38 in (9.65 mm). A quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

The material holds up against propane and butane, greases and lubricants, and water. Buna-N (Nitrile) is specified 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). Verify compatibility before use with automotive brake fluid or strong acids. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and lower compressive load required to achieve a seal.

Typical settings include automotive, fluid power, and construction equipment.

Order part number HQ4106, sold individually. Nominal inside diameter is listed as 3/16 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.