Oatey® PVC Flexible Medium Bodied Fast Set Clear Cement is recommended for spa and swimming pool applications because it is formulated to withstand pressures and vibrations associated with these installations. It also applies easily with included in-lid dauber. This clear, medium bodied, fast set cement can be used to solvent weld flexible PVC pipe and rigid fittings up to 6 in. diameter with interference fit. Oatey products have earned the trust of plumbing professionals for over 100 years.