Refrigerant R134a 1,1,1,2-Tetrafluroethane, HFC-134A Replacement for R-12. Pure, Purity:99.8% min. ARI-700 CE DOT cylinder Refrigerant R134a is an HFC refrigerant replacement for R-12. It is the global standard for new mobile air conditioning and can also be used to retrofit existing R-12 mobile air conditioning systems. It is also used in new medium- and high-temperature stationary commercial ...