Spiral Wound Gaskets

Durlon® Spiral Wound Gaskets are manufactured according to ASME B16.20 standards and the Quality Assurance complies with API Specifications Q1 and ISO 9001:2008


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 to API Specification Q1 and ISO 9001:2000.

There are three styles of standard Durlon® Spiral Wound Gaskets:

  • Style D- Sealing element
  • Style DR- Sealing element (D) centering ring (R) which acts as a compression stop
  • Style DRI- Sealing element (D) centering ring (R) and inner ring (I) which protects the sealing element from erosion, inward buckling and improves radial strength

Download our Spiral Wound Gaskets Guide or our Spiral Wound Color Coding Guide for more information on Durlon® Spiral Wound Gaskets.


Warning: Durlon® gasket materials should never be recommended when both the temperature and the pressure are at the maximums listed. Properties and applications shown are typical. No application should be undertaken by anyone without independent study and evaluation for suitability. Never use more than one gasket in one flange joint, and never reuse a gasket. Improper use or gasket selection could cause property damage and/or serious personal injury. The data reported is a compilation of field testing, field service reports and/or in-house testing. While the utmost care has gone into publishing the information contained herein, we assume no responsibility for errors. The information and specifications contained in this website are subject to change without notice. This revision cancels and obsoletes all previous editions.