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The U.S. Postal Service has taken a proactive role in the areas of aviation mail security and hazardous materials acceptance, handling, and transport for many years. But we also need your help. Each customer must comply with the restrictions outlined in this publication to assist us in securing a safe mailing environment for us all.
Mailers:
- Must know the physical characteristics of the hazardous materials they wish to mail.
- Are responsible for ensuring that they do not mail any hazardous material that can injure persons or property unless the hazardous material is permitted under the mailing standards. Further guidance on domestic, international, and Army Post Office, Fleet Post Office, Diplomatic Post Office mailability is available from Publication 52, Hazardous, Restricted, and Perishable Mail. The Mailing Standards of the United States Postal Service, International Mail Manual (IMM®) contains the standards that apply to hazardous materials intended for foreign addresses.
- May reuse packaging and boxes when all markings and labels are removed or completely obliterated. Regardless of what is actually inside your package, any markings, residue of markings, or labels for hazardous materials may result in delivery delays, a package return, or removal from the mailstream. Refer to “old markings” in Publication 52, for more information.
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