**568-350 FLUOROSILICONE 70 DURO ORINGS

Part number FS70350 is an AS568-350 blue Fluorosilicone (FVMQ) 70 Shore A O-Ring measuring an inside diameter of 4.6 in (116.84 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.02 in (127.51 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The compound resists extreme cold, aromatic fuels and jet fuel, and ozone and weathering. Fluorosilicone (FVMQ) offers 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). Applications involving high-temperature dynamic service or ketones call for a different compound.

Maintenance and OEM teams specify it across high-altitude equipment, aviation fuel systems, and aerospace and defense.

This item is sold individually under part number FS70350. Unit weight is approximately 13.259 g and nominal inside diameter is listed as 4 5/8 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.