Journal Published Online: 01 January 1993
Volume 21, Issue 1

Asbestos-Free Gasket Materials for Turbines



The results of a systematic program undertaken to evaluate potential substitute materials for asbestoe-free gaskets used in power plant turbines are reviewed. Thirty-three commercially available materials were subjected to a series of tests reflecting the requirements of a good gasket material for turbine applications. The results identified flexible graphite as the only material to meet or exceed the properties of asbestos gaskets. One limitation of flexible graphite uncovered in the program, however, is its relatively high stress relaxation behavior especially at temperatures above 650°F (343°C). Ten-thousand-hour stress relaxation tests were conducted in the temperature range of 500 to 850°F (260 to 454°C) to determine the usable temperature limit of flexible graphite. The effects of joint flexibility and reloading were also evaluated at high temperatures.

Author Information

Jones, WF
Nondestructive Evaluation, Power Generation Business Unit, Westinghouse Electric Corporation, Charlotte, NC
Seth, BB
Materials and Computer Systems Engineering, Power Generation Business Unit, Westinghouse Electric Corporation, Orlando, FL
Pages: 3
Price: $25.00
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Stock #: JTE11747J
ISSN: 0090-3973
DOI: 10.1520/JTE11747J