The sealed dye cartridge is specifically designed for R134a and HFO1234yf refrigerants, making it compatible with mechanical and electric compressors. Manufactured by AEK290-N, this 125ml cartridge ensures that the refrigerants are lubricated and protected, preventing leaks and ensuring optimal performance. Ideal for vehicle maintenance and repair, this sealed dye cartridge is a reliable choice for those looking to maintain the efficiency of their air conditioning system.