Mylar® EL21 Film

Image of Mylar® EL21 hazy polyester film

Mylar® EL21 thick-gauge polyester films’ excellent dielectric strength, chemical and moisture resistance, thermal stability, and physical toughness make them a very versatile and functional insulating material for general purpose electrical/electronic applications. They are flexible, strong, and durable with an unusual balance of properties, making them suitable for a variety of industrial applications as well. Available in 7.5, 9, 10, and 14 mil thicknesses, these films are often used for transformers, laminates, bus bars, and punched parts. It is available in thinner gauges in the form of Mylar® EL.

Request a Quote or Sample

Select which type of product you would like a quote for


  • Mylar® EL21 7.5 mil (187.5 micron)
  • Mylar® EL21 9 mil (225 micron)
  • Mylar® EL21 10 mil (250 micron)
  • Mylar® EL21 14 mil (350 micron)


  • Excellent dielectric strength
  • Good moisture and chemical resistance
  • Great thermal stability and durability in high-temperature environments
  • Strong mechanical properties
  • Flexible

Typical Applications

  • Transformers
  • Laminates
  • Bus bars
  • Punched parts
  • General-purpose electrical/electronic applications
Data Sheets & Summary Sheets

Related Products

Select which type of product you would like a quote for
Select which type of sample you would like to request


Search form