Effecting a seal

A seal is affected by compressing the gasket material and causing it to flow into the imperfections on the gasket seating surfaces so that intimate contact is made between the gasket and the gasket seating surfaces preventing the escape of the confined fluid. Basically there are four different methods that may be used either singly or in combination to achieve this unbroken barrier.

In general, it is considered that only the gasket surface provides the seal in the joint. It is assumed that the gasket material is impervious and will not permit any passage of fluid through the gasket seal.

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