Supercool Total Leak Stop for metal & rubber components features Patented “HFC Free” BOV Delivery System for quick, safe & easy application. Total Leak Stop will seal small leaks in metal & rubber components including evaporators, condensers, hoses, O-rings and gaskets while lubricating A/C system to improve performance and help extend system life. Proprietary formula does not contain harmful polymers and will not harm A/C system components, reclamation, or recovery equipment. Available for R134a & HFO1234yf A/C systems. Safe for hybrid and electric compressors. One can treats 1 vehicle. TSI Supercool…Trusted by Professionals Worldwide