Gaskets Blog

We are the leading industry source for educational information on gasketing products. We influence, support, harmonize and develop gasket standards. This is accomplished through collaboration with national and international standards bodies and in partnership with customers. The division serves as a forum for the exchange of technical information and the development of consensus actions on the issues that are recognized as of common interest and benefit to the member companies and their customers.

Bolting Considerations for Bolted Flange Joints, Part 1

Often in the deployment of bolted flange joints, the end user is supplied with a targeted gasket stress with little appreciation for the compensations that are, or should be, included in deriving this stress. The informed end user realizes that there can be many such compensations. In all cases, it is important to understand the state of stress of the bolts and flanges.

The following is a two-part article that addresses the subject of bolt strength resulting from gasket stress compensations. Part 1 provides an explanation of the testing characteristics of both ductile and brittle bolting materials. Attention is drawn to the definition of yield and ultimate strength. Various types of bolting compensation are then discussed.

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