Polyetheretherketone (PEEK) with the trade name Ketron® offers chemical and hydrolysis resistance similar to PPS but can operate at higher temperatures. It is the only thermoplastic that can achieve mechanical properties above 300 C. This semi-crystalline aromatic polymer is considered the exclusive thermoplastic available on the market today.

Areas of use

Because of its properties, polyetheretherketone products can be found in applications where there are high demands on dimensional stability, strength, and fatigue resistance and a low risk of fire at elevated temperatures. Some examples include the space, aviation, and defense industries, and LSG/FG qualities are suitable in the medical technology and food technology industries.


More specific areas of use include:


  • Valve block.
  • Buses.
  • Stock.
  • Distances.
  • Trays.
  • Skittles.


General facts about polyetheretherketone peek

  • Color: tan, or very light brown.
  • Coloring options: limited.
  • Tensile strength: 14,000 psi.
  • Tensile modulus: 590,000 psi.
  • Water absorption: 0.50% in 24 hours.
  • Melting point: 343°C (approximately 650°F).
  • Flammability rating: UL 94 V-0 (0.059″ thickness).


The benefits of PEEK plastic

  • PEEK plastic has a semi-crystalline structure with a glass transition temperature of 143 C and a melting temperature of 343 C.
  • This type of plastic is resistant to high and low temperatures.
  • PEEK is resistant to most chemicals, even at high temperatures.
  • It is flame retardant without additives.
  • PEEK plastic has unsurpassed hydrolysis resistance.
  • It has low smoke generation during combustion.
  • PEEK offers good abrasion resistance and low friction.
  • It has excellent mechanical properties.


Limitations of Polyetheretherketone peek plastic

  • PEEK plastic is high in cost.
  • It has limited color options.
  • Polyetheretherketone PEEK plastic is difficult to process.
  • This type of plastic is susceptible to wear and abrasion.
  • It has limited availability of grades.
  • Poor bonding with adhesives.
  • Limited in some harsh chemical environments.
  • PEEK plastic is challenging for intricate designs.