Soil Sea is the Supplier of Non Metallic, Semi Metallic and Metallic spiral wound, camprofile and metal jacketed flange gaskets
What is a Flange Gasket?
Flange gaskets are used to create a static seal between two flanges faces, at various operating conditions, with varied pressure and temperature ratings. A gaskets fills the microscopic spaces and irregularities of the flange faces, and then it forms a seal that is designed to keep liquids and gases. Correct installation of damage-free gaskets and demage-free flange faces is a requirement for a leak-free flange connection.
Types of gaskets
Materials for gaskets can be divided into three main categories:
1. Non-Metallic types
2. Semi-Metallic types
3. Metallic types
Oval and Octagonal RTJ's are designed to seal pressures of up to 6,250 psi in accordance with ASME B16.20 and up to 5,000 psi in accordance with API 6A pressure ratings. Typical high pressure and temperature applications where these gaskets are used include Valve and pipe-work assemblies in oil field drilling and refining applications. In addition, these gaskets are installed in high pressure vessels and pumps.
How They Work
Under axial compressive load, ring type joints plastically deform and flow into the irregularities of the flange groove. Since the load bearing area of the ring type joint is relatively small, very high surface stresses result between the sealing faces of the ring type joint and the groove. These stresses are further increased on the Style RX and BX rings which allows very high internal pressures to be sealed. Since ring type joints are solid metal, their recovery characteristics are poor. The seal is maintained by the action of axial load upon the gasket.