Q-116 FLUOROELASTOMER 75 Q RING

This quad-ring is supplied in AS568-116 black Viton® (FKM) 75 Shore A built to an inside diameter of 0.737 in (18.72 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 0.943 in (23.95 mm), catalogued under part number QV70116. It resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

The compound resists engine and transmission fluids, chlorinated solvents, and petroleum oils and fuels. Viton® (FKM) is specified for the industry benchmark where nitrile reaches its thermal limit, excellent resistance to compression set and permeation. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). Exposure to low-molecular-weight organic acids or hot water and steam will shorten service life. 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, high-temperature process equipment, and chemical processing.

Reference part number QV70116 when ordering; the item is sold individually. Unit weight is approximately 0.725 g and nominal inside diameter is listed as 3/4 inch. Review your operating media and conditions against this specification before installation. 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.