PermaSleeve® Wire marker sleeve. Made of B-342 polyolefin. Matte finish. Heat shrinkable sleeves fit snugly around wires for maximum insulation protection and permanent identification. Full-circle insulating sleeves meet rigid insulating material requirements and physical properties of MIL-DTL-23053/5 Class 1, MIL-M-81531, MIL-STD-202F, METHOD 215 and UL224 when printed with R5000 dot matrix and R4300 and R4502S (for black sleeves only) thermal transfer ribbons. These fade resistant, smudge-proof sleeves can be used on with Brady's Sleeve and Datab® printers, as well as thermal transfer printers. Applicable for wire and cable marking, panel identification. 5000/package quantity/UOM. Available in white.