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Insulation

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Electrical insulation materials have excellent dielectric strength along with other desirable properties, such as resistance to heat, cold, moisture, chemicals, and radiation. Ask us which electrical insulation materials are suitable for your application, and we’ll recommend the right gasket insulation material.

Interstate Specialty Products supplies die cut insulation for medical and scientific, electronics, and industrial applications. For over 50 years, our Made in the USA manufacturing company has been die cutting electrical insulation and thermal management silicones at out custom fabrication facility in Sutton, Massachusetts.

Insulation Types

  • Fish paper is often a good choice if you need an electrical insulator for oil-filled transformers.
  • Mylar combines electrical insulation with moisture resistance.
  • Formex provides UL-94 flame resistance
  • Kapton electrical insulation also has a high flammability rating, and can resist many different chemicals.


Silicone insulation combines excellent electrical and thermal insulation. Applications include:

  • electrical conductor seals
  • outdoor electrical enclosures
  • high voltage insulation.

Thermal management silicone materials are supplied as sheets and rolls, and then converted by precision die cutting methods.  


Ask Interstate Specialty Products about the right thermal management silicone for your application, and how we die cut insulation to produce custom-fabricated parts. Our die cutting services meet demanding specifications in a range of part sizes, and to exacting tolerances for dimensionally-stable materials.

Interstate Specialty Products can also laminate die cut insulation with other materials and adhesives, and manufacture insulating materials via precision die cutting or roll slitting methods. To learn how our insulation manufacturing capabilities support your application, contact us on-line or call (800) 984-1811.


*Properties and applications shown throughout this website are typical.  Your specific application should not be undertaken without independent study and evaluation for suitability.