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Table 26 to Subpart G of Part 63—Seal Related Factors for Internal Floating Roof Vessels

Seal Related Factors for Internal Floating Roof Vessels

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  3. Title 40
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  5. Chapter I
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  9. Subpart G
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  11. Appendix Table 26 to Subpart G of Part 63
CorpusDaily eCFR
Displayed edition2026-04-27
Last updated2026-04-27

Table 26 to Subpart G of Part 63—Seal Related Factors for Internal Floating Roof Vessels

Seal typeKSn
Liquid mounted resilient seal:
Primary seal only3.00
With rim-mounted secondary seal a1.60
Vapor mounted resilient seal:
Primary seal only6.70
With rim-mounted secondary seal a2.50
a If vessel-specific information is not available about the secondary seal, assume only a primary seal is present.