Q-178 FLUOROELASTOMER 75 Q RING

The QV70178 is an AS568-178 black Viton® (FKM) 75 Shore A Quad-Ring measuring an inside diameter of 9.737 in (247.32 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 9.943 in (252.55 mm). This quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

The material holds up against many acids, aggressive chemicals, and petroleum oils and fuels. Viton® (FKM) offers long service life in hot, chemically aggressive environments and very low compression set at elevated temperature. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). The profile itself contributes resistance to the spiral twisting that defeats round-section rings and a parting line located away from the sealing surface.

Common environments for this compound include high-temperature process equipment, semiconductor equipment, and automotive fuel systems.

This item is sold individually under part number QV70178. Nominal inside diameter is listed as 9 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.