Mylar® WC polyester film delivers excellent dielectric strength, tensile strength up to 33,000 psi in the transverse direction, and superior thermal stability with a melting point of 254°C and low shrinkage of 0.8% TD at 150°C for 30 minutes. Ideal for core wrap insulation in telecommunications and power transmission wire and cable, it offers robust moisture and chemical resistance, high cut-through endurance, and UL recognition including MIL-I-631D Type G and UL 94 VTM-2. Available in thicknesses from 0.48 mil (12 micron) to 5 mil (125 micron), this flexible, durable PET film ensures dimensional stability and mechanical reliability in demanding electrical applications.