What is the primary purpose of a pipe joint compound?

The primary purpose of a pipe joint compound is to prevent leakage. This compound is applied to the threads of pipe connections to create a seal that fills any small gaps or imperfections between the mating surfaces. By doing so, it helps to ensure that fluids or gases do not escape from the joint, which is crucial in maintaining system integrity and safety. A reliable seal safeguards against potential problems such as pressure drops, contamination, or accidents that can arise from leaks.

While some compounds may have properties that protect against corrosion or improve surface finishes, these characteristics are secondary to the primary function of sealing joints effectively to prevent leakage. Additionally, pipe joint compounds do not typically serve to escalate pressure ratings; rather, they are designed to be used within specified pressure limits to maintain safety and functionality. Thus, preventing leakage is the most critical function of a pipe joint compound, making it essential for any piping system.