Oatey 35206 Hercules Boiler and Heating System Cleaner, 1-Quart Product Description Hercules, QT, Boiler Heating System Cleaner, Liquid Cleaner Corrosion Preventative Treatment For Hydronic Boilers Heating Systems, Removes Rust Scale, Emulsifies Oil, Grease, Sludge, Prevents Foaming, Will Not Harm Rubber Or Plastic Components, Add To Any Hydronic System To Prevent Boiler Scale Build Up Corrosion Clogging Of Heating System Valves, Helps Maximize Boiler Efficiency. The product is manufactured in China. Easy installation and easy handling. From the Manufacturer Specifically formulated to clean and condition steam and hot water boilers and hydronic heating systems. Contains silicone which protects pumps by lubricating seals; frees and lubricates zone valves. Prevents clogging of hot water valves and other flow valves and helps stop priming and foaming with a special anti-foam agent. Safe and simple to use. Promotes maximum boiler efficiency and saves fuel. Removes oil, sludge, loose rust and scale and prevents corrosion. No draining or flushing is necessary unless system is very oily, rusty, or in unusually dirty condition. Safe for use in systems with rubber and plastic components. Compatible with any type of Hercules Cryo-tek anti-freeze, other propylene glycol based anti-freeze products and commonly used chemical additives and boiler treatment compounds. Features The product is manufactured in China The product is highly durable and easy to use Easy installation and easy handling Liquid cleaner and corrosion preventative treatment Helps maximize boiler efficiency Contains silicone which protects pumps by lubricating seals Helps stop priming and foaming with a special anti-foam agent Safe for use in systems with rubber and plastic components USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.