**4046-366Y MINNESOTA RUBBER QUAD RING

APG stocks the HQ4046, an AS568-046 black Buna-N (Nitrile) 70 Shore A Quad-Ring with an inside diameter of 4.239 in (107.67 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 4.379 in (111.23 mm). A quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

As a material, Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs and low compression set under sustained load. Expect good resistance to water, many alcohols, and propane and butane. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). The profile itself contributes two sealing bands per contact face rather than one and resistance to the spiral twisting that defeats round-section rings.

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

This item is sold individually under part number HQ4046. Check the compound against your process media, pressure and temperature before committing to a design.