Spiral Wound Gaskets

Spiral Wound Gaskets


Durlon® Spiral Wound Gaskets (SWG) are made with an alternating combination of a preformed engineered metal strip and a more compressible filler material which creates an excellent seal when compressed. The engineered shape of the metal strip acts as a spring under load, resulting in a very resilient seal under varying conditions.


The strip metallurgy and filler material can be selected to seal a wide range of applications. All Durlon® SWG styles have been engineered to precise manufacturing tolerances that allow for lower stress (bolt load) sealing compared to conventional spiral wound gaskets.

All Durlon® SWG are manufactured according to ASME B16.20 standards. Quality Assurance complies with API Specification Q1 and ISO 9001:2000.

Available Styles:

Style D

  • Sealing element only consisting of preformed engineered metal and more compressible filler material
  • Commonly used in tongue and groove or male and female flanges
  • Can also be supplied with an inner ring as Style DI
Style DR
  • Sealing element (D) combined with a centering ring (R) which reinforces the gasket and acts as a compression stop
  • Commonly used with standard raised face and full face type flanges
  • Centering ring is epoxied which provides superior corrosion resistance compared to powder or liquid coating
Style DRI
  • Sealing element (D) combined with a centering ring (R) and an inner ring (I) which improves radial strength and protects the sealing element from erosion and inward bucking
  • Commonly used with standard raised face and full face type flanges
  • In accordance with ASME B16.20-2012, inner rings for all gaskets are recommended for all sizes, materials and classes.
  • Passed the API Standard 6FB, Fourth Edition, 2019 Fire Test – the leading standard for testing flange gaskets used in upstream, midstream and downstream applications.