Fish paper is a durable, flexible, electrical insulator that’s made of vulcanized fiber and used with motor windings and for gasket insulation. A lightweight dielectric paper, this material is also a good choice for oil-filled transformers. Moisture absorption can cause fish paper to swell or curl.

Interstate Specialty Products die cuts fish paper insulation for medtech, electronics, and industrial applications. For over 60 years, our Made in the USA manufacturing company has been die cutting electrical insulation materials at our custom fabrication facility in Sutton, Massachusetts.

Advantages of Fish Paper

  • outstanding dielectric properties
  • good mechanical strength due to fibrous structure
  • wear-resistant
  • more heat-resistant than many plastic materials
  • greater flexibility than plastics at low temperatures

Types of Fish Paper

Interstate Specialty Products can die cut rolls or sheets made from various grades of fish paper. For example, flame-retardant fish paper insulation that complies with UL-94 and ASTM D-635 standards are used in components such as wear plates, arc chutes, and circuit breaker baffles. Fish papers that incorporate mica layers for increased dielectric strength are also available.

Ask Interstate Specialty Products which type of electrical insulator is right for your application, and how our die cutting services can produce a range of part sizes to exacting tolerances. To learn more about our custom insulation manufacturing capabilities, 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.

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