Factors effecting gasket performance
external factors change gasket and seal effectiveness
Gaskets create a positive seal between stationary parts. Gaskets must create an initial seal and then maintain that seal over a length of time. When useful life is finished, a gasket should be easily removable in order to be replaced.
Factors affecting gasket sealing performance
1. Must seal system fluid.
2. Chemically resists system fluid to prevent serious impairment of its physical properties.
3. Deforms enough to flow into the imperfections on the gasket seating surfaces to provide intimate contact between the gasket and the sealing surfaces.
4. Withstands system temperatures without serious impairment to performance properties.
5. Is resilient and creep resistant enough to maintain an adequate portion of the applied load.
6. Has sufficient strength to resist crushing under the applied load, and maintain its integrity when being handled and installed.
7. Does not contaminate the system fluid.
8. Does not promote corrosion of the gasket sealing surfaces.
9. Is easily and cleanly removable at replacement.
During the gasket product selection process, Sealing Devices recommends that these factors be used as a checklist to determine optimal seal performance for your application.
Here are some critical items to consider when choosing gasket materials, including correct bolting patterns recommendations for common configurations.
- There are also size, temperature, application, media, pressure (STAMPS) guidelines for improving gasket sealing performance. Use correct bolt-torque, and re-torque within 24 hours.