Mylar® EL polyester film is a strong, flexible PET insulating material designed for electrical and electronic components, offering excellent dielectric strength, chemical inertness, moisture resistance, thermal stability, and durability. Available in thicknesses from 48 to 500 gauge, with heavier EL21 grades for demanding applications, it is well suited for transformers, laminates, bus bars, punched parts, coating, die cutting, embossing, and laminating. Its reliable electrical performance, good handling characteristics, and high-temperature resistance make it a versatile choice for insulation where consistent voltage endurance and compact dimensions are essential.