Klea Mexichem R404A refrigerant is a HFC refrigerant with great features to replace R502 refrigerant. Klea Mexichem R404A refrigerant provides performance, capacity and efficiency equivalent to R502 refrigerant. Klea Mexichem R404A refrigerant is a mixture of 3 types of refrigerants: R143a, R125 and R134a in a proportion of 44: 52: 4 respectively.