Sialex®Ring - The sustainable lime and rust treatment without chemicals Made in Germany. Sialex®Ring from the German Phoenix Ring Manufaktur is a next-generation of physical water treatment systems. With the help of decades of proven technology, problems such as limescale, rust as well as biofilm and hard water in water-bearing pipes, brown water from the pipes, machines and devices in industry, commerce and private households can be solved with a positive cost-effective ratio and in an absolutely environmentally friendly manner. Also Sialex®Ring acts as a preventer of certain types of corrosion. Tens of thous