In the specific model selection and installation process, any type of gasket must have the following eight key features to ensure long-term sealing in extreme application environments:
1. Gasket sealing
For the materials in the sealing system, the gasket should not leak within a certain period of time under the recommended temperature and pressure.
2. Gasket fluid density
The surface of the gasket and the flange should be well matched after the connecting bolts are tightened to ensure sealing.
3. Gasket stress relaxation resistance
The gasket should have good stress relaxation resistance under the influence of pressure load and application temperature, otherwise it will cause the bolt gap to be damaged, resulting in increased surface stress of the gasket, and then leak the gas system,
4. Gasket chemical corrosion resistance
The gasket used should not be corroded by organic chemicals and should not pollute substances.
5. The resilience of the gasket
Even when the system is stable, the two flexible graphite packing flanges connected by the graphite metal wound gasket will undoubtedly have a slight deviation due to the temperature and pressure fluctuations. The elasticity of the gasket should be able to compensate for this deviation to ensure the best sealing.
6. The anti-adhesion of the gasket
The gasket should be easily removed from the flange after use and not sticky
7. The corrosion-free gasket
The flange surface connected by the gasket is free of corrosion
8. The temperature resistance of the gasket
The gasket used should ensure normal use at the minimum temperature of the system and the temperature of the metal sheathed gasket. Flexible high-purity graphite sealing materials have been proven to be very effective materials by relevant companies.