In water treatment and depuration operations, different processes are carried out in order to obtain a product that complies with the stringent health and legal legislation of each country.During the different treatments to which water is subjected, the mechanical seals may come into contact with sediments, organic matter, dissolved substances such as calcium and magnesium (hard water), sulphate and carbon dioxide (acid water), manganese (sewage water), nitrates (water contaminated by fertilisers), etc.

Furthermore, the applications require sealing systems that guarantee safety, preventing the leakage of corrosive or flammable products that could escape the atmosphere.