Spiral Wound Gasket (SWG)

Color cord as ASME B16.20 on request.


Spiral wound gaskets are to be constructed as alternate plies of preformed metal windings and plain fillers that are spirally wound when compressed between two flanges. A "V" and "W" shaped crown centered in the metal strip acts as a spring, giving gaskets greater resilience under varying conditions. Filler and strip materials can be changed to accommodate different chemical compatibility requirements. If the load available to compress a gasket is limited, gasket construction and dimensions can be altered to provide an effective seal.

Product Standards

Our production is in compliance with the standards of ASME B 16.20, MSS SP-44, API 605, DIN, JIS, JPI, BS 1560, JG / T, GB / T, HG, SH, etc. Or products can be customized according to the users’ requirements. Please provide the specific drawings if the gasket is used in the heat exchanger with ribs.


     Hoop Material    
     Filler Material    
     Inner & Outer Ring Material    
Normal Thickness mm
     Gasket          Inner & Outer Ring    
BS  Without rings

 304(L); 316(L); 321; 317L; 31083 Monel. Ti, Ni, INC, Hast C/B Zr702 etc.

 Graphite, PTFE,
 Asbestos Non-asb Mica, Etc

 CS, 304(L), 316(L), 321, 317L 31803 Ti, Ni, INC Hast, Monel, Zr702







BSI  With inner ring
BSO  With outer ring
BSIO  With inner & outer rings



BS - Basic Type.
Basic construction type, inner and outer diameters are reinforced with several piles of metal without filler to give greater stability and better compression characteristics. - Suitable for tongue

BSI - Inner Ring Type.
Solid inner metal ring acts as a compression stopper. To prevent accumulation of solids, reduce turbulent flow of process fluids and minimize erosion, damages of gasket between flange bore and the

BSO - Outer Ring Type.
Solid outer ring accurately locates the gasket on the flange face to give the additional radial strength to prevent the gasket blowout and acts as a compression limiter. Very easy to install the ga

BSIO - Inner & Outer Rings Type.
A inner ring and outer ring type gasket will give an additional compression limiting stopper for gasket inner and outer side. Suitable for use with flat face and raised face flanges and specified f