# Lighter fluid — Postal shipping restrictions by item category

For Lighter fluid, carrier is USPS; restriction type is restricted; scope is domestic mail via surface transportation only; conditions is Permitted only via surface transportation if fluid qualifies as Limited Quantity surface material and is within quantity limitations and packaging requirements; Packaging Instruction 3A must be followed, recorded from its source on 2026-08-04.

- **Item category:** Lighter fluid
- **Carrier:** USPS _(our reading, not quoted from the source)_
- **Restriction type:** restricted _(our reading, not quoted from the source)_
- **Scope:** domestic mail via surface transportation only _(our reading, not quoted from the source)_
- **Conditions:** Permitted only via surface transportation if fluid qualifies as Limited Quantity surface material and is within quantity limitations and packaging requirements; Packaging Instruction 3A must be followed _(unconfirmed — we could not tie this to the quote below)_

## What the source says

> Lighter Fluid: Considered a flammable liquid and typically has a flashpoint between 20° F (-7° C) and 55° F (13° C). It is permitted only in domestic mail via surface transportation

## Source

- https://pe.usps.com/text/pub52/pub52c3_022.htm

Last verified: 2026-08-04. Review by: 2027-08-04.
Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).