Q-431 FLUOROELASTOMER 75 Q RING

Part number QV70431 is an AS568-431 black Viton® (FKM) 75 Shore A Quad-Ring measuring an inside diameter of 5.225 in (132.72 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 5.775 in (146.69 mm). A quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

The compound resists aromatic hydrocarbons, petroleum oils and fuels, and engine and transmission fluids. That behavior comes from the compound itself: Viton® (FKM) offers very low compression set at elevated temperature, excellent resistance to compression set and permeation. Continuous operating temperature is published at -15°F (-26.1°C) to 400°F (204.4°C). The profile itself contributes two sealing bands per contact face rather than one and lower compressive load required to achieve a seal.

Common environments for this compound include oil and gas, high-temperature process equipment, and aerospace.

Stocked as QV70431 and sold individually. Unit weight is approximately 34.334 g and nominal inside diameter is listed as 5 1/4 inch. Application requirements vary, so validate compatibility with your process conditions prior to 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.