Q-043 FLUOROELASTOMER 75 Q RING

QV70043 is an AS568-043 black Viton® (FKM) 75 Shore A Quad-Ring built to 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). In service, this quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

As a material, Viton® (FKM) offers excellent resistance to compression set and permeation, long service life in hot, chemically aggressive environments. The material holds up against many acids, engine and transmission fluids, and chlorinated solvents. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). Verify compatibility before use with low-molecular-weight organic acids or ketones and esters. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and two sealing bands per contact face rather than one.

Maintenance and OEM teams specify it across aerospace, automotive fuel systems, and semiconductor equipment.

Stocked as QV70043 and sold individually. Nominal inside diameter is listed as 3 1/2 inch. Review your operating media and conditions against this specification before installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.