Brady's diesel resistant heat shrinkable sleeves fit snugly around wires for maximum insulation protection and permanent identification. The B-7646 sleeves are resistant to organic fluids, common fuels, lubricants, and solvents, and have a 3:1 shrink ratio. These full-circle insulating sleeves meet the rigid insulating material requirements and physical properties of NF F 00-608 type A and H norm, SAE AS-81531 (mark permanence), and MIL-STD-202 method 215K (solvent resistance) when printed with R-6600 series thermal transfer ribbons. B-7646 sleeves will not fade or smudge and can be used with Brady's thermal transfer printers.