**568-248 FLUOROSILICONE 70 DUROORING

Part number FS70248 is an AS568-248 blue Fluorosilicone (FVMQ) 70 Shore A O-Ring with an inside diameter of 4.734 in (120.24 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.012 in (127.3 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

As a material, Fluorosilicone (FVMQ) offers a very wide service temperature range and silicone's low-temperature flexibility combined with fuel resistance. Expect good resistance to aromatic fuels and jet fuel, chlorinated solvents, and extreme cold. Published continuous service range is -80°F (-62.2°C) to 350°F (176.7°C). Applications involving hydrazine or ketones call for a different compound.

Typical settings include aerospace and defense, aviation fuel systems, and high-altitude equipment.

This item is sold individually under part number FS70248. Nominal inside diameter is listed as 4 3/4 inch. Review your operating media and conditions against this specification before installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.