Suitable for the delivery of refrigerants R12,R22,R502,andR134a. 1.Widely used in motor,air conditioners and industrial refrigeration eqipment. 2.The inner layer consisted of a special rubber of R12,R22,R134 ,and R502 resistance.3.The outer layer is consisted of rubber with excellent weatherability and the reinforced layer is composed of woven fibers. Freon Charging Rubber Tube