Gaskets

Gaskets are used to create and maintain a static seal between flanged connections under operating conditions.

The bolting force or clamp force (in case of clamped connections) compress the gasket which flows into the imperfections between the mating surfaces creating a seal. For a properly designed gasket enclosure the following considerations must be taken into account to achieve a satisfactory seal :

• Sufficient force must be available to initially seat the gasket.
• Sufficient forces must be available to maintain a residual stress on the gasket under operating conditions to ensure that the gasket will be in close contact with the seating surfaces preventing a blow-by or leakage.
• The gasket material must withstand the pressure exerted on the gasket at the operating temperature as well as resist corrosive attack from the process fluid.

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