Combustible Liquids (Hazard Class 3)
What is the carrier for Combustible Liquids (Hazard Class 3)?
For Combustible Liquids (Hazard Class 3), carrier is USPS; restriction type is restricted; scope is Domestic Mail via Air Transportation (as ID8000) or Surface Transportation (as Limited Quantity); prohibited International; conditions is Via air, mailable if they qualify as ID8000 materials per 335 and meet criteria in Exhibit 343.22. Via surface, mailable if they qualify as Limited Quantity and consumer commodity materials per 343.22. Prohibited in international mail, recorded from its source on 2026-08-04.
//pe.usps.com/text/pub52/pub52c3_022.htm> 343 Flammable and Combustible Liquids (Hazard Class 3) <https://pe.usps.com/text/pub52/pub52c3_023.htm> 344 Flammable Solids (Hazard Class 4) <https://pe.usps.com/text/pub52/pub52c3_024.htm> 345 Oxidizing Substances, Organic Peroxides (Hazard Class 5) <https://pe.usps.com/text/pub52/pub52c3_025.htm> 346 Toxic Substan
— pe.usps.com, retrieved 2026-08-04
- Item category
- Combustible Liquids (Hazard Class 3) verified
- Carrier
- USPS our reading
- Restriction type
- restricted our reading
- Scope
- Domestic Mail via Air Transportation (as ID8000) or Surface Transportation (as Limited Quantity); prohibited International our reading
- Conditions
- Via air, mailable if they qualify as ID8000 materials per 335 and meet criteria in Exhibit 343.22. Via surface, mailable if they qualify as Limited Quantity and consumer commodity materials per 343.22. Prohibited in international mail.
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/text/pub52/welcome.htm