Q-434 FLUOROELASTOMER 75 Q RING

Ordered as QV70434, this is an AS568-434 black Viton® (FKM) 75 Shore A Quad-Ring supplied with an inside diameter of 5.6 in (142.24 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 6.15 in (156.21 mm). The quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

Viton® (FKM) is valued for very low compression set at elevated temperature and long service life in hot, chemically aggressive environments. The material holds up against chlorinated solvents, many acids, and aggressive chemicals. Continuous operating temperature is published at -15°F (-26.1°C) to 400°F (204.4°C). It should not be specified for service in amines or low-molecular-weight organic acids. The profile itself contributes two sealing bands per contact face rather than one and lower compressive load required to achieve a seal.

Typical settings include aerospace, automotive fuel systems, and oil and gas.

QV70434 ships individually. Nominal inside diameter is listed as 5 5/8 inch. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.