Q-342 FLUOROELASTOMER 75 Q RING

This quad-ring is supplied in AS568-342 black Viton® (FKM) 75 Shore A measuring an inside diameter of 3.6 in (91.44 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.02 in (102.11 mm), catalogued under part number QV70342. It provides a dual sealing band on each contact face for improved reliability.

As a material, Viton® (FKM) is widely chosen for excellent resistance to compression set and permeation, the industry benchmark where nitrile reaches its thermal limit. This material stands up to petroleum oils and fuels, aggressive chemicals, and many acids. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). Exposure to hot water and steam or low-molecular-weight organic acids will shorten service life. 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 fuel systems, high-temperature process equipment, and aerospace.

QV70342 ships individually. Unit weight is approximately 14.221 g and nominal inside diameter is listed as 3 5/8 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. 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.