Can be added in A/C systems of HYBRID and ELECTRIC VEHICLES PERMANENT REPAIR: permanently seals refrigerant leaks up to 0.3 mm in vehicle A/C systems ACTS QUICKLY on rubber and metal components of A/C systems Compatible with ANY REFRIGERATION LUBRICANTS AND REFRIGERANT GASES SAFE for the system thanks to its polymer-free formulation; does not block A/C components and does not react with moisture and oxygen Product for professional use 100% Made in Italy formulation and production