49 CFR 172 Special Provision TP22 (TP-Codes)

These provisions apply to the transportation of hazardous materials in IM and UN Specification portable tanks.

Code	TP22
Description	Lubricants for portable tank fittings (for example, gaskets, shut-off valves, flanges) must be oxygen compatible.
HazMat with this Code	UN 1003 - Air, refrigerated liquid, (cryogenic liquid) UN 1003 - Air, refrigerated liquid, (cryogenic liquid) non-pressurized UN 3311 - Gas, refrigerated liquid, oxidizing, n.o.s. (cryogenic liquid) UN 2201 - Nitrous oxide, refrigerated liquid UN 1073 - Oxygen, refrigerated liquid (cryogenic liquid)