Where should threaded lubricant be applied?

Threaded lubricant should be applied to male threads only to ensure optimal sealing and performance. Male threads are the protruding threads on pipes or fittings that must fit securely into the female threads of another fitting. By applying the lubricant specifically to the male threads, you reduce friction and prevent galling (the wear that occurs when two metals rub together), which can compromise the integrity of the joint and potentially lead to leaks.

Lubricating only the male threads also helps in achieving a proper seal when the joint is tightened, allowing for easier assembly without over-torquing. It's important to avoid applying lubricant to the female threads or the entire joint, as these can lead to improper sealing and unwanted movement that could result in joint failure or leaks. Additionally, excess lubricant can attract dirt and debris, which can also compromise the quality of the seal. Applying lubricant correctly enhances the longevity and reliability of the piping system.