General Sealing Products / Solid Rubber Compound Grades

302 Fluorosilicone (FVMQ)

ASTM D-2000
Classification: FK

Table of common grades, Custom Grades including Mil Spec, Def STAN, NSN, AS & DTD are available.
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Temperature Range:

Low:    -60°C (-100°F) Non Brittle to -80°

High:    +220°C (+350°F) to 280° Very Short Bursts


Fluorosilicone combines the good high- and low-temperature properties of silicone with limited resistance to petroleum based oils and/or hydrocarbon fuels. Fluorosilicone provides a much wider operational temperature range than Fluorocarbon rubbers. The Primary use of Fluorosilicone is O-rings in fuel systems and in applications where the dry-heat resistance of silicone O-rings is required.

Due to relatively low tear strength, high friction and limited abrasion resistance of these materials, they are generally recommended for static applications only. Fluorosilicone’s with high tear strength, high temperature or improved resistance to compression set are available.
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