Q-018 FLUOROELASTOMER 75 Q RING

Ordered as QV70018, this is an AS568-018 black Viton® (FKM) 75 Shore A Quad-Ring with an inside diameter of 0.739 in (18.77 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 0.879 in (22.33 mm). The quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

Viton® (FKM) is specified here for excellent resistance to compression set and permeation, outstanding high-temperature capability. It resists engine and transmission fluids, many acids, and chlorinated solvents. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). It should not be specified for service in ketones and esters or hot water and steam. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and lower compressive load required to achieve a seal.

You will find this material specified across aerospace, automotive fuel systems, and chemical processing.

Stocked as QV70018 and sold individually. Unit weight is approximately 0.3449 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.