Transport Canada (TC) labels meet the requirements of the Transportation of Dangerous Goods Regulations Section 4 - Appendix, IATA - 7.3, ICAO - 5.3, UMDG - 22.214.171.124.2. Labels are backed with a permanent adhesive back, scuff and scratch resistant, made to withstand rigors of harsh environment for up to 1 year. US Department of Transportation (DOT) compressed gas labels, as required by DOT 49CFR, section 172.304 and 172.406. These labels feature self-adhesive heavy-duty material with tough, fade resistant inks. Ink will not come off with normal cleaning compunds.