Q-310 FLUOROELASTOMER 75 Q RING

Part number QV70310 is an AS568-310 black Viton® (FKM) 75 Shore A Quad-Ring built to an inside diameter of 0.475 in (12.07 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 0.895 in (22.73 mm). A quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

The compound resists aggressive chemicals, many acids, and petroleum oils and fuels. That behavior comes from the compound itself: Viton® (FKM) is specified for excellent resistance to compression set and permeation, outstanding high-temperature capability. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). Verify compatibility before use with ketones and esters or hot water and steam. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and a parting line located away from the sealing surface.

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

Order part number QV70310, sold individually. Nominal inside diameter is listed as 1/2 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.