Fluorosilicone
ASTM D1418, ISO 1629 Designation: FVMQ
ASTM D2000, SAE J200 Type/Class: FK
Standard Color: Blue
Trade Names:
- FE® (Shincor Silicones)
- FSE® (General Electric)
- Silastic LS® (Dow Corning Corp.)
Relative Cost: High
General Temperature Range: -80° to +400° F
Fluorosilicone is the common name for fluorovinylmethyl silicone rubber. Fluorosilicones resist solvents, fuel, and oil (similar to fluorocarbons). They also have high and low temperature stability (as with silicones). Fluorosilicones are resilient, with low compression set characteristics. Though widely used in aerospace fuel systems and auto fuel emission controls, fluorosilicones are really only good as static seals. High friction tendencies, limited strength, and poor abrasion resistance disqualify them as dynamic seals.
FVMQ performs well in:
- Air
- Hydrocarbons (aromatic, chlorinated)
- Ozone
- Sunlight
FVMQ does not perform well in:
- Brake fluids
- Hydrazine
- Ketones
