Permanent polyester (B-423) is ideal for component identification, barcode labels, rating plates and solar panel identification. This halogen-free, permanent acrylic, aggressive adhesive, harsh environment, the heat-resistant, permanent adhesive polyester label is abrasion-resistant, chemical-resistant, corrosion-resistant, humidity-resistant, UV-resistant and weather-resistant. These labels are compatible with BMP61, BMP71 (with media adapter), M610, M611, M710 (with media adapter) printers. M61-R6010 and M7-R6000 ribbons are recommended to print these labels. They are used in barcode labeling, component and equipment labeling, general identification, inventory and inspection labeling.