---
kind: "section"
citation: "30 C.F.R. § 18.27"
title: "30"
number: "18.27"
heading: "Gaskets."
url: "https://uscodex.org/cfr/30/18.27"
---

# §18.27. Gaskets.


A gasket(s) shall not be used between any two surfaces forming a flame-arresting path except as follows:

- (a) A gasket of lead, elastomer, or equivalent will be acceptable provided the gasket does not interfere with an acceptable metal-to-metal joint.
- (b) A lead gasket(s) or equivalent will be acceptable between glass and a hard metal to form all or a part of a flame-arresting path.

## Notes

### Authority

Authority: 30 U.S.C. 957, 961.

### Source

Source: 33 FR 4660, Mar. 19, 1968, unless otherwise noted.