Reference Source

Small compressed gas cylinders and cartridges in or with a device (CO2)

For Small compressed gas cylinders and cartridges in or with a device (CO2), carrier is FAA (air transport); restriction type is restricted; scope is checked baggage only; not allowed in carry-on; conditions is Up to four cartridges/cylinders of nonflammable gas; each must not exceed 50 ml (equivalent to a 28 g CO2 cartridge); larger cylinders are forbidden unless covered by another exception, recorded from its source on 2026-08-10.

Item category
Small compressed gas cylinders and cartridges in or with a device (CO2) verified
Carrier
FAA (air transport) our reading
Restriction type
restricted our reading
Scope
checked baggage only; not allowed in carry-on our reading
Conditions
Up to four cartridges/cylinders of nonflammable gas; each must not exceed 50 ml (equivalent to a 28 g CO2 cartridge); larger cylinders are forbidden unless covered by another exception. verified
Sourcefaa.gov
Verified
Review by
DatasetPostal shipping restrictions by item category

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.

What the source says

Up to four cartridges/cylinders containing nonflammable gas may be carried. Each cylinder must not exceed 50 ml (equivalent to 28 g carbon dioxide cartridge).

faa.gov, retrieved 2026-08-10

Source

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