Trade Name(s):
Silastic LSDow Corning Corporation
FSEMomentive Performance Materials
ASTM D1418 Designation:FVMQ
Standard Colour:Blue

Fluorosilicone combines the good high and low temperature stability of Silicones with the fuel, oil, and solvent resistance of Fluorocarbons.

Key Use(s):

Aerospace fuel systems. Auto fuel emission control systems. Primarily for static sealing applications.

Temperature Range:
Standard Compound:-60°C (-75°F) to +177°C (350°F)
Hardness (Shore A):40 to 90

Fluorosilicone is most often used in aerospace applications for systems requiring fuel and/or diester-based lubricant resistance up to 400°F. Although generally specified for aerospace use, due to its excellent fuel resistance and high temperature stability, Fluorosilicone is also becoming an increasingly popular material for a wider range of sealing applications. It features good compression set and resilience properties, Fluorosilicone compounds are suitable for exposure to air, sunlight, Ozone, Chlorinated and aromatic hydrocarbons.


Due to limited physical strength, poor abrasion resistance, and high friction characteristics, these elastomers are not generally recommended for dynamic sealing. They are predominately designed for static sealing use. They are also not recommended for exposure to brake fluids, hydrazine, or ketones.

Please note: This Material Data Sheet section is to be used as a professional guide only. Eastern Seals (UK) Ltd may source their products from a variety of Quality Approved Suppliers and the data shown should not be relied upon by any purchaser without verification of material source.

Temp Range
Data Sheet
F80BLUE-60°C to +177°C80Fluorosilicone 80 shore for general use.

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