Teflon tape, also known as plumber’s tape, is a commonly used material for sealing and lubricating threaded pipe connections. While it is generally safe to use in most plumbing applications, there are a few situations where it is not recommended:
- High-pressure applications: Teflon tape is not designed to withstand high-pressure applications. In these situations, a liquid thread sealant or pipe dope should be used instead.
- Oxygen-rich environments: Teflon tape is combustible and can ignite in the presence of oxygen. It should not be used in applications involving compressed oxygen or other highly oxygenated environments.
- Gas applications: Teflon tape is not recommended for use with gas piping systems. Instead, gas-rated sealant or joint compound should be used to ensure a proper seal.
- High-temperature applications: While Teflon tape is heat resistant, it may not be suitable for extremely high-temperature applications. In these cases, high-temperature sealant or joint compound should be used instead.
- Non-threaded connections: Teflon tape is designed to seal threaded connections only. It should not be used to seal compression fittings or other non-threaded connections.
In summary, Teflon tape is a useful material for sealing and lubricating threaded pipe connections in most plumbing applications. However, it is important to be aware of its limitations and avoid using it in situations where it may not be suitable.