Solvent cement is a type of adhesive commonly used in the plumbing and construction industries for joining plastic piping systems, particularly those made from polyvinyl chloride (PVC) and chlorinated polyvinyl chloride (CPVC). It is a viscous liquid that works by dissolving the surfaces of the materials being bonded, allowing them to fuse together as the solvent evaporates. This creates a strong, watertight seal that is essential for maintaining the integrity of plumbing systems.