StacksVerified U.S. regulatory reference

49 CFR §178.33-2

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Single-trip inside containers. Must be seamless, or with seams, welded, soldered, brazed, double seamed, or swedged.
  2. (b)The maximum capacity of containers in this class shall not exceed one liter (61.0 cubic inches). The maximum inside diameter shall not exceed 3 inches.