Aerospace CIRLEX® High Performance

DuPontTM CIRLEX® High Performance Material for Aerospace Markets

DuPontTM CIRLEX® High Performance Material by FRALOCK®

For over 40 years Fralock has supplied high-quality materials for the global marketplace.

DuPontTM CIRLEX® polyimide is the latest addition to our diverse product family. Made from 100% DuPontTM  KAPTON® polyimide laminate film, CIRLEX® is a product that delivers performance and value for some of the most demanding material applications.


CIRLEX® – an all-polyimide laminate sheet material – has been developed to fill the growing requirement for thick all-polyimide materials, stemming from a wide variety of industries such as automotive, aerospace, and electronics.

If you are looking to replace current applications using ceramic or Vespel®, or upgrade
to a new high performance polyimide material, CIRLEX® offers material flexibility and an expanded range of thickness options unattainable with cast resins or laminated constructions using adhesives. Offering the excellent chemical, physical, thermal, and electrical properties of KAPTON® in thick sheet format is unique in today’s material marketplace.

You can count on CIRLEX®’s integrity at extreme temperatures, from cryogenic -269°C (-452°F) to as high as 351°C (664°F); and it is readily modified/machined by laser cutting, drilling, machining and chemical etching.

Broaden your application horizons with 100% polyimide adhesiveless polyimide laminates.  Maintains all the excellent performance characteristics – electrical, physical and chemical – of DuPont™ KAPTON®

Available in thicknesses starting at 8 mil (.008”,.20mm)

Improved yields from large and custom sheet sizes

Ideal match for environmental extremes

UL® 94VO rated


  • Solder Pad Stencils
  • Flex Circuit Stiffeners
  • Electrical Insulators
  • Fiber Optic Laser Guides
  • Gaskets & Seals
  • Wear Pads
  • Stand-Offs & Spacers
  • Fine-Line Circuits
  • High-Temp, Flexible & Rigid Heaters
  • Extreme Environment Antennas
  • High Amperage Power Bus
  • Electromagnetic Wafer

CIRLEX® Data Sheet -PDF

CIRLEX® RoHS Report 2014 – PDF

CIRLEX® Reach Report 2014  – PDF

high performance
For additional information about us or to begin discussions on your project, click our Quote Request, or call 1-800-FRALOCK (372-5625)