The Brady B-8459 Polyester Matte Labels are designed for applications such as topside of printed circuit boards and rating plates that use high quality barcodes and graphics. Matte white polyester has a permanent acrylic adhesive and is thermal transfer printable. Excellent resistance to most chemicals, oils and water. UL: B-8459 is a UL Recognized Component when printed with the Brady Series R4900 and the Brady Series R6000 Halogen Free ribbons. See UL file MH17154 for specific details.