Flexible polyolefin tubing and thermal transfer resin ribbon in a cartridge • Shrink ratio 3:1 • Operating temperature range of -67°F to 275°F (·55°C to 135°C) with up to 347°F for short duration and low recovery temperature of 194°F • All tubing is flame resistant, chemical and water resistant • Meets Military Specification MIL-DTL-23053/SC Class 1 and 3, UL-224 VW-1 rating • Ideal for wire marking an electrical insulation of light wire harness assemblies.