PEK: The High-Temperature Polymer for Demanding Structural Applications

Polyaryletherketone (PEK) is a member of the PAEK family of polymers renowned for their exceptional mechanical strength and high thermal stability. A top-of-the-range material for demanding sectors such as aeronautics, automotive and medical, PEK combines lightness, chemical resistance and mechanical strength at high temperatures.
Its ability to withstand severe conditions without compromising performance makes it a technical alternative to metal parts, particularly in environments where weight or corrosion is a constraint.Technical advantages of PEK

Extreme thermal resistance

• Withstands continuous temperatures up to 300°C
• Withstands repeated thermal peaks without loss of performance

Excellent mechanical strength

• High wear resistance, outstanding rigidity
• Dimensional stability under thermal or mechanical stress

Chemical inertness

• Insensitive to many acids, bases and solvents
• Ideal for corrosive or sterilizable environments

Controlled tribology

• Low coefficient of friction
• Suitable for moving parts or assemblies without lubrication

Aerospace

• Substitution of metal parts on lightweight structural components
• Reducing the overall weight of aircraft

High-performance automotive

• Used for gears, bearing cages, seals
• Withstands high temperatures under engine hoods

Medical

• Suitable for temporary implants and reusable instruments
• Biocompatible and resistant to steam and radiation sterilization methods

Chemical treatment

• Manufacture of pumps, seals and valves for aggressive fluids
• Stable behavior in corrosive production environments

• KETASPIRE® XT-920
  PEK non-reinforced for very high temperatures
• KETASPIRE® KT820
  Unfilled grade with excellent wear/fatigue properties
• KETASPIRE® KT820CF30
  30% carbon fiber reinforced - increased rigidity and strength
• KETASPIRE® KT820GF30
  30% glass-fiber reinforced - high mechanical strength
• VICTREX® PEK G-45
  Superior thermal and chemical resistance, perfect for extreme environments

By choosing PEK from the DEMGY range, you benefit from :

• a highly technical material , validated in real-life conditions
• proven sector versatility
• customized support for sizing, grade selection and testing under industrial conditions

Polyaryletherketone is a strategic choice for applications where structural reliability is essential. Thanks to DEMGY's KETASPIRE® and VICTREX® grades, industrial engineers have a robust, versatile material ready for use, even under the most extreme conditions.