Material property basis: PTFE itself has an extremely low friction coefficient, which enables the gasket to fit tightly with the sealing surface under pressure, reducing the risk of leakage caused by gaps. Its molecular structure is stable, chemically inert, and not easily corroded by external media, providing protection for long-term sealing from the root. For example, in chemical pipeline systems, facing corrosive media such as acids and alkalis, the material's own stability ensures that the gasket will not be damaged or deformed due to chemical corrosion, maintaining the integrity of the sealing interface.
Optimization of compression rebound performance: In the production process, it is crucial to accurately control the compression rate of PTFE gasket. The appropriate compression rate enables it to fully fill the microscopic concave and convex of the sealing surface during initial installation to form an effective seal. At the same time, the good rebound characteristics of the material ensure that during the operation of the system, when temperature and pressure fluctuations cause slight displacement of the sealing surface, the gasket can rebound and compensate in time and continue to seal. For example, in high-temperature steam pipelines, the pressure changes frequently, and high-quality gaskets always rebound and fit to prevent steam leakage.
Multi-layer composite structure design: Modern PTFE gaskets often adopt multi-layer composite forms. By combining polytetrafluoroethylene with metal foil, rubber and other materials, the high strength of metal and the flexibility of rubber are used to synergistically improve the overall sealing performance. The metal layer enhances the pressure resistance, and the rubber layer makes up for the lack of low-temperature elasticity of polytetrafluoroethylene. The multi-material complements each other to cope with complex working conditions and extend the sealing life. For example, in refrigeration equipment, composite gaskets adapt to low temperatures and pressure shocks and provide long-lasting sealing.
Sealing surface pretreatment: Before installation, the sealing surface of the equipment is finely polished and cleaned to remove impurities such as rust and oil, improve the flatness and finish of the sealing surface, and make the ptfe gasket fit better. Rough or contaminated sealing surfaces will cause uneven local pressure on the gasket and increased wear. Pretreatment can avoid these problems and ensure the durability of the seal. For example, when installing the seal of a large reactor, strict sealing surface treatment is a key step.
Installation process specifications: Follow the correct installation process, use appropriate tools to evenly tighten the bolts, and gradually apply force diagonally to ensure that the gasket is evenly compressed. Avoid over-tightening to cause the gasket to be crushed or unevenly stressed, which will affect the sealing effect and life. In mechanical seal maintenance, standardized installation can make the new gasket quickly reach the best sealing state and continue to work reliably.
Operation monitoring and maintenance: During the operation of the equipment, regularly inspect the sealing parts, and timely detect potential leakage signs through pressure, temperature monitoring and visual inspection. Once a problem is found, adjust the operating parameters or replace the gasket in time to prevent small leaks from turning into major failures and maintain the long-term stability of the sealing system. For example, regular inspections of petrochemical pipelines ensure the long-term effective sealing of ptfe gasket.
Quality standard control: From raw material procurement to finished product delivery, strictly follow international and domestic relevant quality standards, such as ASTM standards, GB standards, etc. to test the various properties of gaskets. Only products that meet high standards can show reliable sealing durability in actual applications and escort safe production in various industries.
