Fluorosilicone, similar to silicone rubber, bonding trifluoropropyl, methyl and vinyl as side chains. Fluorosilicone’s Physical and mechanical properties are similar to the ones of standard VMQ. FVMQ however, offers increased resistance towards fuel and mineral oils. FVMQ’s hot air resistance is poorer than standard VMQ.
Actum Sweden AB has its own FVMQ compounds: F7004BU02, F3002BU
| Approval | Authority | Svc. Temp. | Compound | Elastomer | Hardness | Color |
| UL157 UL87A UL87B UL87C | UL | -55~80°C | F7004BU02 | FVMQ | 70±5 Shore A | Blue |
| UL1238 | UL | -40~60°C | F3002BU | FVMQ | 30±5 Shore A | Blue |
Cure system:
Standard FVMQ compounds are peroxide cured.
Applications:
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 in | Does not perform well in |
| Fuels | Brake fluids |
| Aromatic mineral oils | Ketones |
| Benzene, toluene | Hydrazine |
| Ozone and weather |