**568-354 FLUOROSILICONE 70 DURO ORING

FS70354 is an AS568-354 blue Fluorosilicone (FVMQ) 70 Shore A O-Ring built to an inside diameter of 5.1 in (129.54 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.52 in (140.21 mm). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The compound resists extreme cold, aromatic fuels and jet fuel, and chlorinated solvents. That behavior comes from the compound itself: Fluorosilicone (FVMQ) is known for the standard choice for static aerospace fuel system seals and silicone's low-temperature flexibility combined with fuel resistance. Continuous operating temperature is published at -80°F (-62.2°C) to 350°F (176.7°C).

It sees regular use in high-altitude equipment, aviation fuel systems, and aerospace and defense.

This item is sold individually under part number FS70354. Nominal inside diameter is listed as 5 1/8 inch. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.