September 2010

Maintenance and Reliability

Spiral-wound or kammprofile gaskets?

There appears to be a shift toward the latter, but the choice isn’t always clear. Here’s where best to apply each type.

Reeves, D. W., Chevron Richmond Refinery; Yoder, C., Garlock Sealing Technologies

Both spiral-wound and kammprofile gaskets are used extensively in refineries and petrochemical plants for applications subject to thermal cycling, pressure variations, flange rotation, stress relaxation and creep. In recent years, however, there has been a discernable shift away from the use of spiral-wound gaskets in favor of kammprofiles, which tend to provide better sealing performance and longer service life. Spiral-wound gaskets were developed to improve performance in high-pressure applications ranging from flanged pipe connections to heat exchangers. Consisting of alternating plies of compressible filler material and thin-gauge metallic strip wrapped phonographically, spiral-wound ga

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