Fluorosilicone O-Rings (FVMQ)

What is Fluorosilicone (FVMQ)?

Fluorosilicone (FVMQ) is a modified silicone rubber material that introduces fluorinated groups into the molecular structure of standard silicone (VMQ). This modification significantly improves resistance to fuels, oils, and petroleum-based fluids while maintaining the excellent flexibility and temperature resistance of silicone rubber.

Compared with VMQ, fluorosilicone performs better in hydrocarbon environments, making it suitable for demanding sealing applications in automotive, aerospace, and fuel system industries where both fuel resistance and low-temperature flexibility are required.

VMQ (silicone)vs FVMQ (Fluorosilicone)

VMQ (Silicone Rubber) and FVMQ (Fluorosilicone) are both silicone-based elastomers, but they differ significantly in chemical resistance and application environments.

VMQ offers excellent high and low temperature resistance, good flexibility, and stable performance in clean environments such as food equipment, medical devices, and water systems. However, it has limited resistance to fuels, oils, and petroleum-based fluids.

FVMQ is a modified version of VMQ with fluorinated groups added to its structure. This improves its resistance to fuels, oils, and hydrocarbons while maintaining similar temperature stability and flexibility. It is widely used in automotive, aerospace, and fuel system applications where standard silicone cannot meet chemical resistance requirements.

In summary, VMQ is preferred for clean and temperature-focused applications, while FVMQ is chosen for environments requiring both fuel resistance and silicone-like flexibility.

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