Kapton® (Gaskets, Seals, Insulators)

Custom Gasket Mfg. is a leading supplier of Kapton® Polyimide Film (Gaskets, Seals, Insulators)

Our company’s reputation for excellence has been built on our ability to provide our valued customers with the most effective manufacturing solutions to meet their most demanding applications. Our main objective is to continuously exceed our customer’s expectations by providing them with high-performance gaskets and sealing products, competitive pricing, on-time delivery and exceptional customer service. Custom Gasket Mfg. is committed to consistently meet all of your blueprint specifications and tolerance requirements.

Custom Gasket Mfg. specializes in precision Kapton® gaskets, seals, and insulators for a wide range of industries and applications. We utilize several different methods of manufacturing custom Kapton® components depending upon our customer’s requirement including: die cutting, waterjet cutting, laser cutting and flash cutting. Custom Gasket Mfg. also offers many secondary applications such as punching, scoring, creasing, folding, metalizing, laminating, and pressure sensitive adhesive coating.

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Kapton Gaskets, Seals, Insulators

Kapton® (by DuPont™) is a polyimide film which offers a unique combination of electrical, thermal, chemical and mechanical properties over a wide temperature range. It can function at 428°F to 464°F for continuous service, and intermittent at 752°F. Kapton® can operate at temperatures as low as -452°F. It excels as an insulator and exhibits high-temperature resistance. Kapton® does not melt or burn as it has the highest UL-94 flammability rating: V-0. Kapton® Film is available in thicknesses from 0.0003″ up to 0.005″. Custom Gasket Mfg. takes pride in its ability to consistently produce precision Kapton® components guaranteed to meet your specifications and function perfectly within your application.

Available types of Kapton® Polyimide Film

Kapton® standard types
Kapton® HNPolyimide General Use (Basic)Insulation for wires, conductors, cables, motor windings, solenoids, transformers and capacitors
Kapton® FNPolyimide Film / FEP CoatingInsulation of high temperature wires, cables and ribbon cables
Kapton® VNPolyimide Film, Dimensionally StableClose Tolerance
Kapton® special types
Kapton® CRCorona Resistant Polyimide FilmElectrical Systems, Power Inverters
Kapton® FCRKapton® CR  FEP CoatingConductors and Cables Insulation in Electrical Systems
Kapton® MTHigh Thermal Conductivity PolyimideMotor Winding Insulation
Kapton® MTBBlack Polyimide / High Thermal ConductivityLoudspeaker Coils, Electrical Insulating Pads
Kapton® FMTKapton® MT  / FEP coatingHeater elements
Kapton® CBBlack Polyimide FilmSatellite Blankets, Radiant Heat Absorber
Kapton® XCElectrically Conductive, AntistaticSatellites, Microwave and RF Electronics
Kapton® KJThermoplastic Polyimide Film (Heat-Sealable)High temperature applications, such as insulations in aerospace, aviation, space travel, heater foils, and laminates with glass/ceramics
Kapton® HKJPolyimide Base Film HN with KJ-CoatingHigh temperature applications, such as insulations in aerospace, aviation, space travel, magnetics, oscillators, and laminates with glass/ceramics

Kapton® Polyimide Film Industry Applications


Kapton® Polyimide Film possesses a unique combination of electrical, thermal, mechanical, physical and chemical properties that make it ideal for a variety of industries including:

  • Consumer Electronics
  • Electrical Insulation
  • Circuit Board Insulation
  • Flexible Circuits
  • Transformer
  • Generator
  • Automotive Diaphragms
  • Automotive Sensors
  • Speaker Coils
  • Heat Sink Pads
  • Fiber Optics Cable
  • High Temperature Powder Coating
  • Semiconductor Manufacturing
  • Motor Windings
  • Rotor
  • Electrical Devices
  • Dielectric Gaskets
  • Thermal barrier
  • Etching
  • Insulation Pads (Heat Sinks)
  • Transformer and Capacitor Insulation
  • Magnet Wire insulation
  • Formed Coil Insulation
  • Wind Energy

Kapton® is a registered trademark of DuPont™

Please visit our gasket materials page for more information on our extensive selection of materials.

For more information on custom Kapton® products or to speak with one of our knowledgeable professionals, please feel free to Contact Us or complete our online Request For Quote form.

Call 800-985-6750 or email your inquiry to sales@customgasketmfg.com.