Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you're on a federal government site.

SSL

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

The latest general information on the Coronavirus (COVID-19) is available on Coronavirus.gov. For PHMSA contact information during the COVID-19 health emergency, please visit our page.

United States Department of Transportation United States Department of Transportation

UN Cylinders: What You Should Know

"DOT is committed to ensuring that information is available in appropriate alternative formats to meet the requirements of persons who have a disability. If you require an alternative version of files provided on this page, please contact PHMSA-Accessibility@dot.gov."

This brochure describes the USDOT standards for the design, construction, and use of UN pressure receptacles, adopted into 49 CFR, Parts 171-180, effective September 11, 2006.

Published Date: Monday, September 11, 2006