Causes of Flange Isolation Gasket, Sleeve, and Washer Failure

摘要

Many of the problems with flange isolation stem from using alternative materials in place of those specified. These problems appear to be much more extensive than most users realize. Many failures have occurred because the materials used were inferior to or did not meet the design specifications. This article presents causes of failures and offers recommendations to ensure that flange isolation performs as desired. Problems with gasket and flange isolation material failures appear to be more far reaching than many users realize. A number of companies have experienced gasket failures at rates not seen since the change from flat flange isolation gaskets to pressure energized gaskets. The reasons for these failures are still being studied.