Plumbers use a wide variety of specialized materials to seal pipes depending on the specific pipe material and joint type. For threaded metal and rigid plastic pipes, they apply PTFE tape and liquid thread sealant paste. For copper water supply systems, they use lead-free solder and flux combined with propane torch heat to create permanent capillary sweat joints. For PVC and ABS drain and vent lines, they use chemical solvent cement that fuses the plastic pipes together permanently. Additionally, rubber gaskets, wax rings, mechanical repair clamps, and compression fittings are utilized across various fixtures to ensure complete system integrity.
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