StacksVerified U.S. regulatory reference

49 CFR §178.33a-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 1 L (61.0 cubic inches). The maximum inside diameter shall not exceed 3 inches.