Oxygen generator, chemical (including when contained in associated equipment, e.g., passenger service units (PSUs), portable breathing equipment (PBE), etc.) · USPS
What is the restriction type for Oxygen generator, chemical (including when contained in associated equipment, e.g., passenger service units (PSUs), portable breathing equipment (PBE), etc.) · USPS?
For Oxygen generator, chemical (including when contained in associated equipment, e.g., passenger service units (PSUs), portable breathing equipment (PBE), etc.), carrier is USPS; restriction type is prohibited; scope is domestic mail (air and surface); conditions is Hazard class 5.1, UN3356, packing group II; domestic mail air: Prohibited; domestic mail surface: Prohibited, recorded from its source on 2026-08-10.
Oxygen generator, chemical (including when contained in associated equipment, e.g., passenger service units (PSUs), portable breathing equipment (PBE), etc.) 5.1 UN3356 II Prohibited Prohibited
— pe.usps.com, retrieved 2026-08-10
- Item or substance
- Oxygen generator, chemical (including when contained in associated equipment, e.g., passenger service units (PSUs), portable breathing equipment (PBE), etc.) verified
- Carrier
- USPS our reading
- Restriction type
- prohibited our reading
- Scope
- domestic mail (air and surface) our reading
- Conditions
- Hazard class 5.1, UN3356, packing group II; domestic mail air: Prohibited; domestic mail surface: Prohibited
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
Source
- pe.usps.comhttps://pe.usps.com/cpim/ftp/pubs/pub52/pub52.pdf