Which of the following is a primary application of Teflon tape?

Teflon tape, also known as plumber's tape, is primarily used to create a watertight seal on threaded pipe connections. When applied to the threads of a pipe before it is screwed into a fitting, it helps to fill any tiny gaps that may exist between the threads. This sealing action effectively reduces the risk of leaks that can occur due to water or gas escaping from these connections.

In applications involving plumbing, gas lines, or hydraulic systems, ensuring that threaded joints are leak-free is crucial for safety and efficiency. Teflon tape is chemically inert and can withstand a range of temperatures and pressures, making it suitable for various piping materials. This is why its primary application is focused on preventing leaks in threaded pipe connections.

Using Teflon tape does not enhance the durability of the pipe itself, nor does it serve as a construction material for pipes. Additionally, it does not function as a cooling agent in systems, as its role is strictly limited to sealing threaded joints. This clear purpose positions Teflon tape as an essential component in pipefitting and plumbing tasks.