Fluorosilicone like silicone rubber has side chains consisting of trifluoropropyl, methyl, and vinyl. Its physical and mechanical properties are comparable to those of standard VMQ silicone rubber. However, fluorosilicone offers greater resistance to fuels and mineral oils. It is important to note that fluorosilicone has a lower resistance to hot air compared to standard VMQ silicone rubber.

Actum Sweden AB has its own FVMQ compounds: F7004BU02, F3002BU

ApprovalAuthoritySvc. Temp.CompoundElastomerHardnessColor
UL-55~80°CF7004BU02FVMQ 70±5 Shore A Blue
UL1238UL-40~60°C F3002BUFVMQ30±5 Shore A Blue

Cure system:

Standard FVMQ compounds are peroxide cured.


Since FVMQ offers excellent low-temperature flexibility and good resistance to fuel and aromatic mineral oils it is often used together with jet and automotive fuels, most solvents and engine oil especially in aerospace industry.

General information

ASTM D 1418 Designation: FVMQ
ISO/DIN 1629 Designation: FVMQ
ASTM D2000 / SAE J 200 Codes: FK
Standard Color(s): Blue
Hardness Range: 40 to 85 Shore A
Relative Cost: High

Service Temperatures

Standard Low Temperature: -60°C / -76°F
Standard High Temperature: 177°C / 350°F
Special Compound Low Temperature: -60C / -76°F
Special Compound High Temperature: 232°C / 450°F

Performs well inDoes not perform well in
Brake fluids
Aromatic mineral oilsKetones
Benzene, tolueneHydrazine
Ozone and weather