Any type of sealing gasket, including aluminum foil sealing gasket, in harsh operating environments, to ensure long-term effective sealing, must have the following major characteristics.
1.Non-corrosive
The aluminum foil sealing gasket shall be non-corrosive on the surface of the connected container.
2. Temperature resistance
The selected gasket should ensure normal operation at the lowest and highest temperature of the system.
3. Air tightness
Regarding the medium of the sealing system, the gasket does not leak during the recommended temperature and pressure operation for a certain period of time.
4. Compressibility
The contact surface of the gasket and the container should meet well after the connecting lid is tightened to ensure sealing.
5. Resilience
Even in the case of a stable system, the connected container mouth and container cover will definitely have a small displacement due to the influence of temperature and pressure, and the elastic function of the gasket should be able to compensate for this displacement to ensure the tightness of the system.
6. Adhesion resistance
The aluminum foil sealing gasket should be easily removed from the bottle mouth after use, and the non-adhesive and creep resistant gasket should have good creep resistance under the influence of pressure load and application temperature, otherwise the bolt torque is lost, resulting in the outer stress of the gasket is reduced, and then the hard gas system leaks.
7.Chemical corrosion resistance
The selected gasket shall not be corroded by the chemical medium and shall not pollute the medium.