Oatey 35206 Hercules Boiler and Heating System Cleaner, 1-Quart 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