USPS Homepage

USPS Packaging Instruction 2A

Flammable Gases

A Class 2 flammable gas that qualifies as a consumer commodity or ORM-D material is mailable provided that all applicable requirements in 342 are met and it is properly packaged as follows.

Proper Shipping Name

ID Number

Mailability

Required Packaging

Primary Receptacle
Cushioning Material
Outer Packaging
Marking