*568-153 FLUOROSILICONE 70 DURO ORINGS

The FS70153 is an AS568-153 blue Fluorosilicone (FVMQ) 70 Shore A O-Ring supplied with an inside diameter of 3.487 in (88.57 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 3.693 in (93.8 mm). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The compound resists petroleum oils, ozone and weathering, and chlorinated solvents. That behavior comes from the compound itself: Fluorosilicone (FVMQ) delivers excellent ozone and UV stability, good compression set resistance in static duty. Service temperature is rated from -80°F (-62.2°C) through 350°F (176.7°C). It should not be specified for service in hydrazine or ketones.

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

Reference part number FS70153 when ordering; the item is sold individually. Nominal inside diameter is listed as 3 1/2 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.