A device designed to temporarily seal a shower drain, preventing water or air from passing through. This is typically a rubber or expandable plug inserted into the drain opening and tightened to create a watertight barrier. An example includes its usage when conducting leak tests on newly installed or repaired shower systems.
The utility of such sealing mechanisms lies in their ability to isolate the drainpipe, which is essential for diagnostic and maintenance purposes. Leak detection becomes significantly more efficient, preventing potential water damage that can result in costly repairs. Historically, simpler methods such as rags were used, but purpose-built plugs offer a more reliable and consistent seal.