---
kind: "section"
citation: "46 C.F.R. § 56.25-15"
title: "46"
number: "56.25-15"
heading: "Gaskets (modifies 108.4)."
url: "https://uscodex.org/cfr/46/56.25-15"
---

# §56.25-15. Gaskets (modifies 108.4).

- (a) Gaskets must be made of materials which are not injuriously affected by the fluid or by temperature.
- (b) Each gasket must conform to the design requirements of the applicable standards of table 2 to [§ 56.60-1](/cfr/46/56.60-1.md).
- (c) Only metallic and suitable asbestos-free nonmetallic gaskets may be used on flat or raised face flanges if the expected normal operating pressure exceeds 720 psig or the operating temperature exceeds 750 °F.
- (d) The use of metal and nonmetallic gaskets is not limited as to pressure provided the gasket materials are suitable for the maximum fluid temperatures.

## Notes

### Amendments

[CGFR 68-82, 33 FR 18843, Dec. 18, 1968, as amended by CGD 86-035, 54 FR 36316, Sept. 1, 1989; USCG-2003-16630, 73 FR 65176, Oct. 31, 2008]

### Source

Source: CGFR 68-82, 33 FR 18843, Dec. 18, 1968, as amended by USCG-2020-0634, 89 FR 50131, June 12, 2024, unless otherwise noted.

### Authority

Authority: 33 U.S.C. 1321(j), 1509; 43 U.S.C. 1333; 46 U.S.C. 3306, 3703; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; E.O. 12777, 56 FR 54757, 3 CFR, 1991 Comp., p. 351; DHS Delegation No. 00170.1, Revision No. 01.4.

### Source

Source: CGFR 68-82, 33 FR 18843, Dec. 18, 1968, unless otherwise noted.

### Amendments

[CGFR 68-82, 33 FR 18843, Dec. 18, 1968, as amended by CGD 86-035, 54 FR 36316, Sept. 1, 1989; USCG-2003-16630, 73 FR 65176, Oct. 31, 2008]