*4043-366Y MINNESOTA RUBBER QUAD RING

Ordered as HQ4043, this is an AS568-043 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 3.489 in (88.62 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 3.629 in (92.18 mm). The quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

As a material, Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs and low compression set under sustained load. The material holds up against many alcohols, petroleum-based oils, and water. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with strong acids or ozone and direct sunlight. The profile itself contributes a parting line located away from the sealing surface and lower compressive load required to achieve a seal.

You will find this material specified across automotive, construction equipment, and general industrial maintenance.

Stocked as HQ4043 and sold individually. Nominal inside diameter is listed as 3 1/2. Check the compound against your process media, pressure and temperature before committing to a design.