# Small compressed gas cylinders for mechanical limbs — Postal shipping restrictions by item category

For Small compressed gas cylinders for mechanical limbs, carrier is FAA (air transport); restriction type is allowed; scope is carry-on and checked baggage; conditions is Nonflammable, nontoxic gas cylinders may be worn in mechanical limbs; a sufficient number of spares for the duration of the journey is authorized, recorded from its source on 2026-08-10.

- **Item category:** Small compressed gas cylinders for mechanical limbs _(verified: appears in the quote below)_
- **Carrier:** FAA (air transport) _(our reading, not quoted from the source)_
- **Restriction type:** allowed _(our reading, not quoted from the source)_
- **Scope:** carry-on and checked baggage _(our reading, not quoted from the source)_
- **Conditions:** Nonflammable, nontoxic gas cylinders may be worn in mechanical limbs; a sufficient number of spares for the duration of the journey is authorized. _(verified: appears in the quote below)_

## What the source says

> Cylinders/cartridges containing nonflammable, nontoxic gases may be worn in mechanical limbs and spare cylinders/cartridges may be carried in carry-on or checked baggage.

## Source

- https://www.faa.gov/hazmat/packsafe/printable-chart

Last verified: 2026-08-10. Review by: 2027-08-10.
Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).