Mastercool 53910 Auto A/C Master Leak Shield

Lubricates system and helps prevent leaks Seals small leaks in evaporator, condenser, hoses, o-rings and gaskets Illuminates larger leaks through the use of high quality universal fluorescent dye For R134a A/C systems Safe for hybrid and electric compressor Intertek laboratory test: No damage, No restriction 1 oz replacement cartridge of Auto A/C Master Leak Shield Sealant with dye