*568-156 FLUOROSILICONE 70 DURO ORINGS

APG stocks the FS70156, an AS568-156 blue Fluorosilicone (FVMQ) 70 Shore A O-Ring measuring an inside diameter of 4.237 in (107.62 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 4.443 in (112.85 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Fluorosilicone (FVMQ) is specified here for standard choice for static aerospace fuel system seals and silicone's low-temperature flexibility combined with fuel resistance. It resists petroleum oils, ozone and weathering, and chlorinated solvents. The material carries a published service range of -80°F (-62.2°C) to 350°F (176.7°C). Exposure to high-temperature dynamic service or ketones will shorten service life.

Common environments for this compound include aerospace and defense, aviation fuel systems, and military ground vehicles.

This item is sold individually under part number FS70156. Unit weight is approximately 2.7 g and nominal inside diameter is listed as 4 1/4 inch. Check the compound against your process media, pressure and temperature before committing to a design.