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 and groove, male and female or grooved to flat face flange assemblies.
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 inside diameter, the annular space is filled up by solid inner metal ring. - Suitable for male and female pipe flanges.
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. In case of installing the outer ring, it is very easy to install the gasket to flange face because the end of outer ring will touch at bolts - Suitable for use with flat face and raised face flanges. For class 900 and above an internal ring is recommended.
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. It will prevent the corrosions on flange face at annular space. - Suitable for use with flat face and raised face flanges and specified for high pressure / temperature service - Class 900 and above or where corrosive or toxic media are present.
Product Description
1.Name:20in 150# SUS304 Metal Graphite Spiral Wound Gasket ASME B16.20
2. Type | Type | Thickness(mm) |
| Basic form | 3.2 | 4.5 |
| With inner ring | | 4.5 |
| With outer ring | | 4.5 |
| With inner and outer ring | | 4.5 |
3. Structure type: | Filler | Hoop | Inner ring | Outer ring |
| Asbestos | SUS 304 | Carbon steel | Carbon steel |
| Graphite | SUS 316 | SUS 304 | SUS 304 |
| PTFE | SUS 316L | SUS 316 | SUS 316 |
| | | SUS 316L | SUS 316L |
Flange type and Spiral Wound Gasket form | Flange type | Spiral Wound Gasket form |
| Flat face flange(F.F) | Gasket with an outer ring |
| Gasket with an inner and outer ring |
| Raised face flange(R.F) | Gasket with an outer ring |
| Gasket with an inner and outer ring |
