*4446-366Y MINNESOTA RUBBER QUAD RING

This quad-ring is supplied in AS568-446 black Buna-N (Nitrile) 70 Shore A built to an inside diameter of 8.475 in (215.27 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 9.025 in (229.24 mm), catalogued under part number HQ4446. It uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

As a material, Buna-N (Nitrile) is valued for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. Expect good resistance to many alcohols, greases and lubricants, and petroleum-based oils. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It is not the right choice where polar solvents or automotive brake fluid are present. The profile itself contributes lower compressive load required to achieve a seal and resistance to the spiral twisting that defeats round-section rings.

You will find this material specified across fluid power, agricultural equipment, and general industrial maintenance.

This item is sold individually under part number HQ4446. Nominal inside diameter is listed as 8 1/2 inch. Check the compound against your process media, pressure and temperature before committing to a design.