568-393 FLUOROSILICONE 70 DURO ORINGS

The FS70393 is an AS568-393 blue Fluorosilicone (FVMQ) 70 Shore A O-Ring supplied with an inside diameter of 23.94 in (608.08 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 24.36 in (618.74 mm). This o-ring compresses into its gland to block fluid or gas migration across a joint.

Expect good resistance to aromatic fuels and jet fuel, extreme cold, and ozone and weathering. That behavior comes from the compound itself: Fluorosilicone (FVMQ) offers the standard choice for static aerospace fuel system seals, excellent ozone and UV stability. Service temperature is rated from -80°F (-62.2°C) through 350°F (176.7°C). Applications involving ketones or brake fluids call for a different compound.

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

FS70393 ships individually. Unit weight is approximately 67.212 g and nominal inside diameter is listed as 24 inch. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.