Gasket Selection
Gaskets can be characterized into three classifications: soft cut, semi-metallic and metallic type.
The physical properties and execution of a gasket will change widely, depending
upon the kind of gasket chosen and the materials from which it is manufactured.
Physical properties are essential elements while considering gasket structure
and the primary choice of a gasket type depends on the following:
Temperature of the media to be contained
Pressure of the media to be contained
Corrosive nature of the application
Criticality of the application
SOFT CUT
Sheet materials are used in low to medium pressure services. With careful selection these gaskets are not only suitable for general service but also for extreme chemical services and temperatures.
Types: Non-Asbestos & Asbestos Fiber Sheets, PTFE, Graphite, Rubber,
Insulating Gaskets.
SEMI-METALLIC
These are composite gaskets comprising of both metallic and non-metallic
materials. These gaskets are suitable for low and high pressure and temperature
applications. An extensive variety of materials is accessible. The metal gives the
strength and the flexibility of the gasket and the non-metallic segment gives the
conformable sealing material.
Types: Spiral Wound Gaskets, Kammprofile Gaskets (covered serrated metal
core), Metal Jacketed Gaskets, Metal reinforced gaskets
METALLIC
These gaskets can be created in an assortment of shapes and sizes suggested
for use in high pressure/temperature applications. With the exception of weld ring
gaskets, high loads are required to seat metallic gaskets, as they depend on the
misshaping or coining of the material into the flange surfaces.
Types: Ring Type Joints, Lens Rings, Weld Rings, Solid Metal Gaskets.