Gasket Design Consideration

Gasket Temperature  -  For higher temperature and pressure systems, thermal stress may cause flanges to loosen which in turn reduces compression on the gasket that may cause for leaks.  It is important to consider the side effects of an elevated temperature system and proceed with the necessary caution such as re torqueing any loosened flanges from system temperature.

Gasket Sealing  -  Failure in a gasket may occur if the specified amount of compression between the flanges on the gasket is not maintained.  This may occur from simple loosing over time, irregularities in operation, or even just expected wear from a piping system.  Ensuring the proper compression on the gasket is being met is crucial to maintaining a good seal and seat and to prevent failure.

Gasket Poor Sealing  -  If the gasket is under loaded, meaning the compressive force is not enough or un even across the gasket due to poor bolting, leakage and failure may also occur.  Uneven compression leads to uneven wear which also is a major cause for premature failure.  Similarly, over compression of a gasket may cause for failure from cracking or ripping within the gasket.

Gasket Permeability  -  The material of the gasket is expected to wear out over time.  It is expected that over the life time of a gasket more and more compression is needed to ensure no leaks occur as the gasket wears out over time and is less able to maintain proper sealing.  Most of the time, replacing the gasket is necessary once the required compression exceeds safe limits.

Gasket Reusing  -  Gaskets are expected to be used only once as the wear from a single use heavily deforms the initial shape of a gasket.  It is important to identify and note whether a gasket has already been used and to not use it for more than a single application.