---
type: restriction
id: usps-all-flammable-liquids-with-flashpoint-of-20-f-7-c-or-below
asset: shipping-restrictions-by-class
title: "All flammable liquids with flashpoint of 20 F (-7 C) or below — Postal shipping restrictions by item category"
sources:
  - https://pe.usps.com/text/pub52/pub52c3_022.htm
source_quote: "All flammable liquids having a flashpoint of 20° F (-7° C) or below are prohibited from mailing."
generated: true
harvested: 2026-08-04
stale_after: 2027-08-04
item_category: "All flammable liquids with flashpoint of 20 F (-7 C) or below"
carrier: "USPS"
restriction_type: "prohibited"
scope: "all mail"
conditions: "All flammable liquids with flashpoint at or below 20 F are prohibited from mailing"
verified: true
---
**Item category:** All flammable liquids with flashpoint of 20 F (-7 C) or below

**Carrier:** USPS

**Restriction type:** prohibited

**Scope:** all mail

**Conditions:** All flammable liquids with flashpoint at or below 20 F are prohibited from mailing

> All flammable liquids having a flashpoint of 20° F (-7° C) or below are prohibited from mailing.

Source: <https://pe.usps.com/text/pub52/pub52c3_022.htm>