Mylar® WC polyester film is a clear electrical insulation material designed for wire and cable core wrap applications in telecommunications and power transmission. It offers excellent dielectric strength, high thermal durability, low shrinkage, low moisture absorption, and strong cut-through resistance. Typical specifications include thicknesses from 0.48 to 5 mil, dielectric strength around 131.2 kV/mm, dielectric breakdown at 10,000 V, tensile strength of 27,000 psi MD and 31,000 psi TD, elongation of 135% MD and 110% TD, and a melting point of 254°C. Its stable, flexible construction supports reliable performance in demanding environments.