ASME B16.20 Spiral Wound Gasket Stainless Steel 304/316 with
Flexible Graphite Filler outer ring and inner ring
Strength of Spiral Wound Gasket
> Spiral Wound Gasket is the ideal gasket in the semi-metallic
category. A narrow strip of V-shap metal hoop is spirally wound
under tension with a filler cushion between the lami nation of the
metal and is spot-welded at both ends.
> This unique construction of a spring-like metal and soft
filler provides gasket excel-lent characteristics.
> Resistance to high temperature and high pressures.
> Great resilience which allows the gasket to adjust
automatically to change in operating conditions, such as pressure
and thermal shocks, vibrations etc.
> Excellent sealability is maintained with comparatively small
gasket area.
The Spiral Wound Gasket our factory manufacturing
> Good tolerance for flange surface finish irregularities.
> Can be designed to any dimensions economically in circular or
moderately noncircular shape.
> Available in a variety of hoop metals and filler materials to
satisfy specific operating conditions.
| Style | Structure | Hoop material | Filler | Inner & outer ring material |
| SWG | With inner & outer rings | 304(L),316(L),321,317(L), 31803,Monel,Ti,Ni,INC, Hast. C/B
Zr702,Etc. | Graphite,PTFE, Mics,Monel,etc. | CS,304(L),316(L),321,317(L), 31803,Monel,Ti,Ni,INC, Hast.C/B
Zr702,Etc. |
Style RW
General purpose gasket suitable for flat face and raised face
flanges up to Class 2500
Centering ring accurately locates the gasket on the flange face,
provides additional radial strength, and acts as a compression
limiter
Spiral winding (sealing element) consists of pre-formed metal and
soft filler material
NOTE: An inner ring is recommended for applications above Class
600, due to the high available bolt load. See Style RWI.
Style RWI
Suitable for flat face and raised face flanges up to Class 2500
Recommended for higher pressure applications, for use with PTFE
fillers, and when delineated by ASME B16.20
Inner ring acts as a compression limiter and protects sealing
elements from process media attack
Style R
Suitable for tongue and groove, male-female, or groove-to-flat face
flanges
Spiral winding only, containing preformed metal and soft filler
material
Inner and outer diameters of winding are reinforced with several
plies of metal without filler to give greater stability
NOTE: Also available with inner rings Style RI.
MC and MCR Gaskets
For Manhole Cover Assemblies
