Fluorosilicone is like silicone rubber, bonding trifluoropropyl, methyl, and vinyl as side chains. The mechanical and physical properties are similar to VMQ.

However, FVMQ offers improved fuel and mineral oil resistance. In some fuels and oils; however, the high temperature limit in the fluid list is more conservative because fluid temperatures approaching 200°C may degrade the fluid, producing acids which attack fluorosilicone O-rings.

Fluorosilicone O-rings combine the good high- and low-temperature properties of silicone with limited fuel and oil resistance. Due to relatively low tear strength, high friction and limited abrasion resistance of these materials, the FVMQ O-rings are generally recommended for static applications only. 

Service Temperature: For FVMQ the Service Temperatures are from -60 C to 177 C. In dry heat, the serviceable temperature range can extend to 232 C.

Hardness: 45 to 80 Shore A are available.

Color: Yellow & blue are available, or any assigned Color from customers.

Application

FVMQ offers excellent low-temperature flexibility and good for fuel and aromatic mineral oil. It is usually applied in contact with jet and automotive fuels, most solvents, or engine oil, especially in the aerospace industry. Featuring good compression set and resilience properties, fluorosilicone compounds are suitable for exposure to air, sunlight, ozone, chlorinated and aromatic hydrocarbons.