1. Leak-proof Sealing：Precisely fits the connection between the thermostat and the engine cylinder block, effectively preventing the leakage of coolant, engine oil and other fluid media. It ensures the stable pressure and liquid level of the engine cooling and lubrication systems, and avoids engine overheating, poor lubrication and other faults caused by leakage.
2. High & Low Temperature & Pressure Resistance：Adapts to the high-temperature and high-pressure environment of engine operation, maintaining stable sealing performance in the temperature range of -40℃~120℃ (NBR) or -20℃~200℃ (FKM). It can withstand system pressure fluctuations and prevent sealing failure.
3. Dust & Corrosion Protection：Blocks external dust, sediment and other impurities from entering the sealing part to avoid component wear, and resists the corrosion of sealing parts and surrounding components by coolant, engine oil and other media, extending the service life of relevant engine components.
4. Vibration Buffering & Damping：Utilizes the elasticity of rubber to buffer the vibration generated during engine operation, reduce the looseness of the sealing part caused by vibration, and maintain long-term sealing reliability.
