Thread sealing tape (also known as PTFE tape, Teflon ta […]
Thread sealing tape (also known as PTFE tape, Teflon tape, or plumber's tape) is a polytetrafluoroethylene (PTFE) film tape commonly used in pipes to seal pipe threads. Tape is sold that is cut to a specific width and wrapped around a spool for easy wrapping of pipe threads. Remember to apply pipe thread compound or gas-grade Teflon tape to the threaded connection before assembling it. Flare fittings rely on a tight fit to seal and do not require additional sealant.
To choose the right thread sealant, look at its chemical resistance to fuel (diesel or gasoline) or oil flowing through the line. Backyard mechanics will tell you they've used plain old gas-proof teflon tape (the yellow stuff) successfully. This is not recommended as it has the potential to break free. When using the tape clockwise, it is recommended that you wrap the tape around the wire three or four times. This is thick enough to prevent leaks, but not so thick that the nuts cannot be tightened.
If you use plumber's Teflon tape on a gas fitting, the tape will degrade over time and gas vapors will escape from the fitting. Teflon tape is an absolute must for most plumbing projects. Its physical composition enables it to fill pipe threads and pipe joint threads with sealant to prevent water from leaking out of threaded connections. You can use PTFE tape anywhere you have a compression joint between two lengths of pipe. This is why PTFE tape is often used when installing faucets and radiators.
Using PTFE tape, plus PTFE Water Tape a thin coat of plumber's joint compound, will ensure a good seal and prevent leaks. Some plumbers prefer to use a liquid compound (also known as "pipe paint") in their pipes rather than tape. In some cases, such as in granite, plumber's putty is undesirable because it can cause stains, and silicone putty is a better choice. PTFE thread sealing tape works by creating a tight-fitting seal or "skin" around the threads of various joint types in pipes and piping systems.