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KasPex™ PEEK is Quality and Quality is Strength!

KasPex™ PEEK is Hi-Tech Seals’ family of high-performance thermoplastic PEEK. These compounds provide durability in harsh chemical environ-ments, excellent mechanical strength, and remarkable dimensional stability. KasPex™ PEEK offers hydrolysis resistance in hot water and steam. This family of PEEK improves the performance and reliability of machined parts in innumerable applications, with new end uses being discovered on a regular basis.

KasPex™ PEEK Compounds
MP39 MP38 MP37

KasPex™ PEEK advantages:

  • Outstanding chemical resistance
  • Superior high temperature performance
  • Exceptional wear & abrasion resistance
  • High electrical integrity
  • Excellent hydrolysis resistance
  KasPex PEEK

The KasPex™ PEEK family of materials is composed of various compounds including:

  • MP39 is our virgin PEEK that offers the highest elongation, toughness, and inertness of all the KasPex™ materials
  • MP38 high temperature performance MP38 is our glass reinforced PEEK which provides additional rigidity and stability
  • MP37 is our carbon reinforced PEEK which provides lower coefficient of friction
  Physical Properties
  Hardness, Shore A D2240 87 87.5 90
  Tensile Strength, psi (MPa) ISO 527 100 171 234
  Elongation, % ISO 527 54 2.6 1.8
  Specific Gravity ISO 1183 1.30 1.51 1.40
*Typical values for injection moulded specimen.

KasPex™ PEEK has a general temperature range of -70°C to 260°C (-94°F to 500°F), specialty compounds are available for low
temperature and extreme heat applications. It is used in numerous critical applications across an endless number of markets and
industries, including:
  • Oil & gas
  • Semiconductors
  • Medical & pharmaceutical
  • Chemical
  • Automotive
  • Agriculture
  • Conveyor technology
  • Plant processing
For more information on KasPex™ PEEK materials, email our engineering department at

*The above information is correct based on our knowledge at the date of its publication. The temperature range listed is a general guideline and final suitability will depend on various application conditions. To ensure this material meets customers’ final requirements and safety demands, we recommend customers conduct their own testing.