Q-109 FLUOROELASTOMER 75 Q RING

APG stocks the QV70109, an AS568-109 black Viton® (FKM) 75 Shore A Quad-Ring measuring an inside diameter of 0.299 in (7.59 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 0.505 in (12.83 mm). A quad-ring provides a dual sealing band on each contact face for improved reliability.

It resists aggressive chemicals, chlorinated solvents, and engine and transmission fluids. That behavior comes from the compound itself: Viton® (FKM) is specified for outstanding high-temperature capability and long service life in hot, chemically aggressive environments. Continuous operating temperature is published at -15°F (-26.1°C) to 400°F (204.4°C). The profile itself contributes a parting line located away from the sealing surface and resistance to the spiral twisting that defeats round-section rings.

Maintenance and OEM teams specify it across high-temperature process equipment, aerospace, and oil and gas.

QV70109 ships individually. Unit weight is approximately 0.321 g and nominal inside diameter is listed as 5/16 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.