Which material is acceptable to use as a lubricant on oxygen system tapered pipe thread connections?

Using Teflon tape as a lubricant for oxygen system tapered pipe thread connections is acceptable because it is specifically designed for sealing and lubricating threaded connections in environments where oxygen is present. Teflon, or polytetrafluoroethylene (PTFE), is chemically stable and does not react with oxygen, making it safe for use in oxygen systems. It provides a reliable seal that reduces the risk of leaks and maintains the integrity of the connection.

In contrast, other materials such as grease, silicone, and oil may pose a safety hazard in oxygen systems. These substances can be flammable or reactive when in contact with high concentrations of oxygen, leading to potential fire risks or material degradation over time. Hence, the use of Teflon tape is favored due to its compatibility with the requirements of oxygen systems, ensuring safe and effective operation.