What is the common method for sealing piped connections in plumbing?

Teflon tape is a widely used method for sealing piped connections in plumbing due to its ease of application and effectiveness in preventing leaks. It is a thin, thread-like tape made from polytetrafluoroethylene (PTFE), which is wrapped around the threads of pipe fittings before they are joined. The tape fills in the microscopic gaps between the threads, creating a tight seal that can withstand water pressure and temperature changes.

Using Teflon tape is particularly beneficial as it not only reduces the risk of leaks but also allows for disassembly of the fittings without causing damage to the threads, which can be crucial for maintenance and repairs. The tape is resistant to many chemicals, making it suitable for various plumbing applications, including water and gas lines.

While rubber gaskets and epoxy compounds are also utilized for sealing, they serve different roles and applications in plumbing. Rubber gaskets are typically used in connection points like flanges or as part of fixtures, where they provide a flexible barrier to prevent leaking. Epoxy compounds can be used for bonding materials or fixing leaks but require longer curing times and more skill to apply effectively.

Thus, Teflon tape remains the preferred choice for sealing threaded connections in plumbing due to its practicality and reliability.