DRY-SHRINK Thin Wall Kynar Heat Shrink, 0.187 Inch (4.8 mm) Diameter, 0.093 Inch (2.4 mm) Maximum Recovered Inside Diameter, 48 Inch Lengths, 25 pieces, Clear cross-linked Polyvinylidfene fluoride (PVDF). Semi-rigid heat resistant Kynar Heat Shrink offers excellent chemical resistance in solvent rich environments. For use in protecting and providing strain relief for wire or connectors in high temperature or solvent rich environments, insulation of heaters. Shrink Ratio is 2 to 1. Temperature Range is -67 degrees Fahrenheit to 347 degrees Fahrenheit (-55 degrees Celsius to 175 degrees Celsius). Voltage is 600 Volts. UL VW-1 Recognized. CSA Certified. Military Specification AMS-DTL-23053/8.