Oatey® FlowGuard Gold® 1-Step All Weather Fast Set Yellow Cement is recommended for cold water systems and hot water systems up to 200°F / 93°C. Its prevention formula is designed to help protect pipes from corrosion. Its medium body has excellent gap filling properties and is easy to apply with included in-lid dauber. This yellow, low VOC, fast set cement can be used to solvent weld copper tube sizes (CTS) CPVC hot and cold potable water pipes and fittings up to 2 in. diameter with interference fit. Oatey products have earned the trust of plumbing professionals for over 100 years.