PVC Heavy Duty Medium Set Clear Cement is recommended for DWV, pressure pipe, potable water and electrical applications. Its thick formula fills gaps in large diameter pipe and loose-fitting joints and is easy to apply with included in-lid dauber. This clear, heavy duty, medium set cement can be used to solvent weld all schedules and classes of PVC pipe and fittings with interference fit up to 18-inch diameter for non-pressure and 12-inch diameter for pressure pipes.