Closures or other devices shall be securely affixed to containers having capacity of 1 gallon (3.785 liters) or less so as to leave a portion remaining on the container when it is opened. In addition, the closures or other devices shall be constructed in such a manner as to require that they be broken to gain access to the contents of the containers.
Code of Federal Regulations
(Sec. 454, Pub. L. 98-369, 98 Stat. 494 (
26 U.S.C. 5301
))
Code of Federal Regulations
[T.D. ATF-206, 50 FR 23954, June 7, 1985]