• High strength & toughness
  • Chemical Resistance
  • High temperature resistance


  • Cost
  • Anisotropic
  • Requires high processing temperatures


RTP Company’s 3900 Series, PEKEKK, is a semi-crystalline thermoplastic with high temperature resistance.

This material’s attributes include resistance to sustained temperatures up to 500 °F, high mechanical properties, inherent flame retardance with low smoke generation, resistance to chemicals and high energy radiation and excellent electrical properties.

Because of its excellent overall properties, this material is recommended for high quality engineering parts that are subject to high loads at elevated temperatures.