Design Engineering 010418 Heat Sheath - Aluminized Sleeving for Ultimate Heat Protection, 0.5" x 3' Slide over wires, cables and hoses for extreme heat protection Withstands 500 degrees F direct, continuous heat and 2000 degrees F radiant heat Pliable for tight bends Trim to desired length Five popular diameters to choose from: 1/2", 3/4", 1", 1-1/4", and 1-1/2"