A disadvantage of a threaded fitting is that they are prone to leaks.

A disadvantage of a threaded fitting is that they are prone to leaks.

• A. True
• B. False
• C. They require no maintenance
• D. They never leak

Answer: (A)

Threaded joints rely on the seal created by the threads plus any sealant, so any imperfection, cross‑threading, or insufficient tightening can leave a leak path. Over time, vibration, thermal cycling, and wear or corrosion on the threads can degrade the seal, making leaks more likely. This is why leaks are a known disadvantage of threaded fittings. To minimize this, proper cleaning, correct thread sealant or tape, following the specified tightening torque, and periodic inspection and retightening after service are important. The idea that they require no maintenance or that they never leak isn’t accurate.

Threaded joints rely on the seal created by the threads plus any sealant, so any imperfection, cross‑threading, or insufficient tightening can leave a leak path. Over time, vibration, thermal cycling, and wear or corrosion on the threads can degrade the seal, making leaks more likely. This is why leaks are a known disadvantage of threaded fittings. To minimize this, proper cleaning, correct thread sealant or tape, following the specified tightening torque, and periodic inspection and retightening after service are important. The idea that they require no maintenance or that they never leak isn’t accurate.