PX439XS Epoxy Composite


Robnor ResinLab PX439XS is a thermally conductive, flame retardant potting and encapsulating compound. It has a good working life and may be hot or cold cured. The system exhibits a good surface finish, high electrical strength; excellent thermal conductivity and low cure shrinkage.

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Robnor ResinLab PX439XS is a rigid, thermally conductive epoxy resin with excellent heat resistance and dimensional stability. PX439XS is compatible with most circuit board components and materials over a wide temperature range. The combination of properties and the ease of use of the material will lend itself to a wide range of electrical insulation applications.


  • Power Supplies
  • Encryption devices
  • Security encapsulation
  • Deep sea electronics
  • High voltage capacitors

Key Properties

  • High electrical insulating characteristics
  • Non-toxic
  • High dimensional stability
  • Low shrinkage
  • Approved to UL94V-0
  • Excellent chemical & heat resistance
  • Does not contain halogens or heavy metals

Product Literature

Robnor ResinLab PX439XS TDS

Additional information

Weight N/A

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