Material: | Fvmq |
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Application: | Valve |
Type: | Rotary Seal |
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Product Description
FVMQ is a high-performance specialty silicone rubber that combines the advantages of fluorocarbon rubber (FKM) and methyl silicone rubber (MQ). Its key characteristics include:
Operating temperature range: -60°C to +200°C (short-term exposure up to 250°C).
Lower compression set than conventional silicone rubber at high temperatures.
Excellent resistance to fuels, oils (engine/hydraulic), solvents (benzene, acetone), and acids/alkalis-close to FKM but with better flexibility.
Superior to standard silicone rubber in resisting polar solvents.
Outstanding resistance to UV, ozone, and radiation, making it suitable for harsh environments.
Tensile strength: 5-10 MPa (lower than FKM but more elastic).
Excellent electrical insulation, ideal for electronics.
Maintains flexibility at -60°C (better low-temperature performance than FKM).
Biocompatible grades available for medical use (ISO 10993 compliant).
Due to its unique properties, FVMQ is widely used in demanding industries:
Aircraft fuel system seals, engine gaskets, and hydraulic line connectors.
Turbocharger hoses, fuel injector O-rings, transmission seals (where heat + oil resistance is critical).
Refinery equipment seals, chemical-resistant gaskets, valve diaphragms.
High-voltage insulators, cable terminations, semiconductor sealing.
Sterilizable tubing, implantable components (if medical-grade certified).
Nuclear plant seals (radiation-resistant).
Property | FVMQ | Standard Silicone (MQ) | Fluorocarbon (FKM) |
---|---|---|---|
Max Temp. Resistance | ★★★★★ (200°C+) | ★★★★☆ (180°C) | ★★★★☆ (200°C) |
Oil/Fuel Resistance | ★★★★☆ | ★★☆☆☆ | ★★★★★ |
Low-Temp Flexibility | ★★★★☆ (-60°C) | ★★★★★ (-70°C) | ★★☆☆☆ (-20°C) |
Cost | High | Low | Medium-High |
Note: FVMQ is the best choice when heat, oil resistance, and flexibility are all required.
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