The following dangerous goods (hazardous materials, as defined in DMM 601) are prohibited in outbound international mail:
- Explosives or explosive devices.
- Flammable materials.
- Pyrophoric, flammable, or combustible liquids with a closed cup flash point below 200°F.
- Flammable solids, including matches.
- Corrosives, liquid or solid.
- Compressed gases.
- Nonflammable with an absolute pressure exceeding 40 psi at 70°F or 104 psi at 130°F.
- Poisons, irritants, controlled substances, and drug paraphernalia.
- Magnetized material with a magnetic field strength of .002 gauss or more at a distance of 7 feet.
- Dry ice (carbon dioxide solid).
The following types of replica or inert explosive devices are prohibited in outbound international mail:
- Military ordnance, ammunition, and shells.
- Similar devices that were originally designed for military or combative use (including training).
This prohibition does not extend to items such as children’s toys or articles that do not represent the above items in a realistic manner.
Any type of counterfeit or pirated article is prohibited in outbound international mail.