568-326 FLUOROSILICONE 70 DURO ORINGS

The FS70326 is an AS568-326 blue Fluorosilicone (FVMQ) 70 Shore A O-Ring measuring an inside diameter of 1.6 in (40.64 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 2.02 in (51.31 mm). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Fluorosilicone (FVMQ) is valued for silicone's low-temperature flexibility combined with fuel resistance and the standard choice for static aerospace fuel system seals. The material holds up against ozone and weathering, aromatic fuels and jet fuel, and chlorinated solvents. Continuous operating temperature is published at -80°F (-62.2°C) to 350°F (176.7°C). It should not be specified for service in high-temperature dynamic service or brake fluids.

Maintenance and OEM teams specify it across high-altitude equipment, military ground vehicles, and aerospace and defense.

Stocked as FS70326 and sold individually. Unit weight is approximately 5.0333 g and nominal inside diameter is listed as 1 5/8 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.