- Table 29 to Subpart G of Part 63—Seal Related Factors for External Floating Roof Vessels
| Seal type | Welded vessels | Riveted vessels | K | N | K | N | Metallic shoe seal: | Primary seal only | 1.2 | 1.5 | 1.3 | 1.5 | With shoe-mounted secondary seal | 0.8 | 1.2 | 1.4 | 1.2 | With rim-mounted secondary seal | 0.2 | 1.0 | 0.2 | 1.6 | Liquid mounted resilient seal: | Primary seal only | 1.1 | 1.0 | a NA | NA | With weather shield | 0.8 | 0.9 | NA | NA | With rim-mounted secondary seal | 0.7 | 0.4 | NA | NA | Vapor mounted resilient seal: | Primary seal only | 1.2 | 2.3 | NA | NA | With weather shield | 0.9 | 2.2 | NA | NA | With rim-mounted secondary seal | 0.2 | 2.6 | NA | NA |
|---|
a NA = Not applicable.