Basic component of a sealed refrigeration system. Its main function is to retain moisture, suitable for commercial refrigeration applications that require high drying capacity. Contains desiccant and filter material to absorb all moisture and other contaminants, compatible with CFC, HCF and HFC refrigerants as well as POE, PAG and AB lubricants. Made of high quality and resistant copper tube, with internal filter cap that allows a greater filtering area capacity (2 to 4 times greater than the competition), with end caps and vacuum aluminum foil packaging. It has different ways of application in refrigeration equipment: commercial, freezers, coolers, self-service showcases, etc. The use is the best way to protect the thermo expansion valve, capillary tube and compressor from contaminants in the system.