These 3 x 4 in self-adhesive vinyl labels use a high-tack acrylic adhesive and UV cured screen printing. Color coded to conform to refrigerant labeling convention. Each label indicates the type of refrigerant (eg. R-11), the chemical name (eg. Trichloromonofluromethane) and the UN No. (eg. UN 1078). Avoid costly mistakes by properly identifying the type of refrigerant contained in recovery cylinders and air conditioning and refrigeration equipment.