Description
Spiral Wound Gasket Style CGI
Style CGI spiral wound gaskets are a Style CG gasket fitted with an internal ring which gives an additional compression limiting stop and provides a heat and corrosion barrier protecting gasket windings and preventing flange erosion. Suitable for use with flat face and raised face flanges and specified for high pressure/temperature sevie class 900 and above or where corrosive or toxic media are present.
It is customary to select inner ring material to be the same as the metal winding.
Note on use of Inner Rings
- ASME B16.20 which covers spiral wound gaskets requires the use of solid metal inner rings
- Pressure Class 900:nominal pipe sizes 24″ and larger
- Pressure Class 1500:nominal pipe sizes 12″ and larger
- Pressure Class 2500:nominal pipe sizes 4″ and larger
- All PTFE filled gaskets.
Standard of Spiral Wound Gasket
- GB4622.2-2008
- HG20610-2009
- HG20631-2009
- ASME B16.20
- BS EN 1514-2
- BS EN 12560-2
- JIS B2404
- EN 1514-1
- EN 12560-1
- JB-T 4705
*We can make various shapes of spiral wound gasket as your drawing and your dimensions.
Materials Available for Spiral Wound Gasket
| METAL WINDING STRIP | FILLER MATERIALS | GUIDE RING MATERIALS |
|---|---|---|
| Stainless Steel 316L | Treated Asbestos Fiber | Carbon Steel |
| Stainless Steel 304 | Non-Asbestos Fiber | Stainless Steel 304 |
| Stainless Steel 309 | P.T.F.E | Stainless Steel 316L |
| Stainless Steel 310 | Flexible Graphite | Stainless Steel 316 |
| Stainless Steel 316 | Ceramic | Ti Stainless Steel |
| TiStainless Steel | Aluminum | 321Stainless Steel |
| 321 Stainless Steel | 347 Stainless Steel | |
| 347 Monel | 4l0 Monel | |
| 400 Nickel | 400 Nickel | |
| 200 Inconel | 200 Inconel | |
| 600 Inronel | 600 Incoloy | |
| 625 Inconel | 800Inroloy | |
| X750 Incoloy | 825 Hastalloy | |
| 800 Incoloy | B2 Hastalloy | |
| 825 Hastalloy | C276 Titanium | |
| B2 Hastalloy | Alloy 20 | |
| C276 Titanium |
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