Specifies the facing column number according to the following correlations:
Gasket Material |
Facing Column |
---|---|
Self-energizing types (O rings, metallic elastomer, and other self-sealing types) |
2 |
Elastomers without fabric or a high percent of asbestos fiber: |
|
Asbestos with Suitable Binder |
|
Elastomers with cotton fabric |
2 |
Elastomers with Asbestos fabric |
|
Vegetable fiber |
2 |
Spiral-wound, asbestos filled: |
|
Corrugated Metal, w/ Asbestos or corrugated metal, jacketed with: |
|
Corrugated Metal: |
|
Flat metal, jacketed asbestos filled |
|
Grooved Metal |
|
Solid flat metal |
|
Ring joint |
|