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.
Back to Basics: Semi-Metallic Gaskets
This is the second of two articles in this “Back to Basics” series that discusses gasketing. While the first article was on soft gaskets, this article will focus on semi-metallic gaskets.
Many variations of semi-metallic gaskets are available. In general, the combination of metal and a soft material merges the structural integrity of the metal with the sealing ability of the soft material. Common variations include corrugated, jacketed, kammprofile and spiral-wound gaskets.
Corrugated gaskets consist of a thin metal that is corrugated or embossed with concentric rings and faced with a soft material such as flexible graphite.
Corrugated gaskets use the substrate’s geometry to achieve conformability to flange irregularities and promote recovery over the life of the seal; they are essentially a line contact seal.