Q-327 FLUOROELASTOMER 75 Q RING

QV70327 is an AS568-327 black Viton® (FKM) 75 Shore A Quad-Ring supplied with an inside diameter of 1.725 in (43.82 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 2.145 in (54.48 mm). In service, this quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

This material stands up to aggressive chemicals, aromatic hydrocarbons, and chlorinated solvents. That behavior comes from the compound itself: Viton® (FKM) is widely chosen for outstanding high-temperature capability and the industry benchmark where nitrile reaches its thermal limit. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). It should not be specified for service in low-molecular-weight organic acids or amines. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and two sealing bands per contact face rather than one.

Maintenance and OEM teams specify it across chemical processing, aerospace, and oil and gas.

Reference part number QV70327 when ordering; the item is sold individually. Unit weight is approximately 6.38 g and nominal inside diameter is listed as 1 3/4 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.