The key to fluorosilicone rubber's stable sealing at high temperatures lies in its unique material properties and structural design:

Molecular Structure Advantages: Fluorosilicone rubber is composed of alternating fluorine-containing groups and silicon-oxygen bonds. The strong electronegativity of fluorine atoms enhances chemical resistance, while the high bond energy of silicon-oxygen bonds (typically greater than 400 kJ/mol) resists molecular breakage and degradation at high temperatures.

Wide Temperature Stability: Fluorosilicone rubber maintains elasticity and sealing properties across an extreme temperature range of -60°C to 250°C. Some optimized formulations can withstand even higher temperatures (such as 300°C for short periods), ensuring leakage resistance under impact from high-temperature gases or fluids.

Thermal Stability and Anti-Oxidation Mechanism: The material is resistant to thermal decomposition or thermal aging in high-temperature environments. The barrier effect of fluorine atoms effectively inhibits oxidation, maintaining long-term sealing integrity.

Application-enhanced performance: In high-temperature and high-pressure applications such as automotive engine exhaust systems or turbochargers, the high-fluorine formula (fluorine content ≥ 70.5%) further enhances corrosion and heat resistance, preventing seal failure due to material degradation.