Fluorosilicone O-Rings

Fluorosilicone rubber (FVMQ) has side chains containing trifluoropropyl, methyl, and vinyl groups, and its mechanical and physical properties are similar to those of silicone rubber (VMQ). It is more resistant to fuels and mineral oils than ordinary VMQ, but its resistance to hot air is slightly weaker. Fluorosilicone rubber is actually a composite material of fluororubber (FKM) and silicone. Because it does not easily deform after compression and performs stably in high and low temperature environments, fluorosilicone rubber O-rings are now increasingly used. However, it is most commonly used in the aerospace field, primarily due to its resistance to aviation fuel corrosion; additionally, its wear resistance is relatively low, making it more suitable for static sealing applications.