Kits for repair and protection of pipes or components pressurized during operation (max 4 bar) steel, concrete, fiberglass, PVC, polyethylene, asbestos cement, cast iron, HDPE, iron. The kit consists of a part for the hydraulic closure of the loss and of a second part for the mechanical fastening; the kit will have to be ready for use and will be activated by the simple immersion in liquid prior aid of water for 30 seconds. The applied product must withstand pressures up to 12 bar.