PTFE TAPE - YELLOW - GAS LINE - CHINA A heavy duty, high density PTFE tape especially recommended for gas lines. Can be used on lines carrying natural gas, propane, 3 water, oil, etc. Thickness is .0035 ± .0005 and density of 1.2 g/cm , pressure rating of 10,000 PSI and withstands temperature from –450º F (-268°C) to +500º F (260°C). Can be used on oxygen systems. Meets Federal Specification MIL-T-27730A. UL listed. Made in China.