**568-378 FLUOROSILICONE 70 DURO ORINGS

The FS70378 is an AS568-378 blue Fluorosilicone (FVMQ) 70 Shore A O-Ring measuring an inside diameter of 10.475 in (266.07 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 10.895 in (276.73 mm). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Fluorosilicone (FVMQ) is specified here for excellent ozone and UV stability, silicone's low-temperature flexibility combined with fuel resistance. This material stands up to extreme cold, aromatic fuels and jet fuel, and petroleum oils. Service temperature is rated from -80°F (-62.2°C) through 350°F (176.7°C).

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

Reference part number FS70378 when ordering; the item is sold individually. Unit weight is approximately 29.587 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. 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.