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PolyEtherEtherKetone (PEEK), a high performance engineering thermoplastic, offers chemical and water resistance similar to PPS (PolyPhenylene Sulfide), but can operate at higher temperatures.

The general purpose grade is unreinforced and offers the highest elongation and toughness of all PEEK grades. The addition of carbon fibers enhances the compressive strength and stiffness of PEEK, and dramatically lowers its expansion rate. This grade offers optimum wear resistance and load carrying capabilities and provides 3-1/2 times higher thermal conductivity than unreinforced PEEK, allowing heat to dissipate from the bearing surface faster. Carbon-filled PEEK is black in color.

Additional formulations (i.e., mineral-filled, bearing, and medical grades) and variants within these grades (FDA compliant, static dissipative, high temperature) are available to meet specific application demands. Contact an Emco Industrial Plastics representative who can help you choose the correct material to meet the needs of your application.

Brand Names

  • Ketron® HPV
  • Semitron® ESd 480
  • Susta® PEEK
  • Tecapeek™
  • Unitrex®
  • Vestakeep PEEK
  • Victrex® PEEK

Emco Industrial Plastics doesn’t claim to represent all of the manufacturers or trade name products listed. This list is intended as a guide of typical materials available for purchase from Emco Industrial Plastics, Inc. For additional information, contact an Emco Industrial Plastics representative by filling out the form below.

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At a Glance

Generic Name

Available In
Sheet, Rod, Tube

MILSpecs Mil-P-46183 Type 2, Class 3

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Technical Information

Stock Products Properties Applications Advantages Grades

Stock Products

Sheet 0.03″ – 2″ TH Up to 24″ x 48″; CTS Black
Rod 0.25" - 6" DIA Std. foot lengths; CTS Black
Tube Available

Give us your cut-to-size dimensions. We will precision-cut these plastics to your exact size. Additional sizes and colors available upon request.


Physical PropertiesUnitsASTMResults
Density lb/in³ D792 0.051
Water Absorption, 24hrs % D570 0.06
Mechanical PropertiesUnitsASTMResults
Tensile Strength @yield psi D638 19000
Tensile Modulus psi D638 1100000
Tensile Elongation @Break % D638 5
Flexural Strength psi D790 25750
Flexural Modulus psi 400000 1250000
Compressive Strength psi D695 29000
Hardness, Rockwell R D785 M102
IZOD Impact Strength Notched ft-lb/in D256 1
Thermal PropertiesUnitsASTMResults
Coefficient of Linear Thermal Expansion (x 10-5 in./in./°F) D256 1
Heat Deflection Temp at 264 psi °F 550
Melting Temperature °F D3418 644
Max Operating Temp °F 500
Thermal Conductivity BTU-in/ft²-hr-°F C177 6.4
Electrical PropertiesUnitsASTMResults
Dielectric Strength. 1/8″ th. V/mil D149 32
Volume Resistivity, 50% RH ohm-cm D257 105

NOTE: The property values presented above are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers’ complete material property datasheets. All values at 73°F (23°C) unless otherwise noted.


  • Pump gears, wear plates
  • Insulators, connectors
  • Seals, washers
  • Bearings, bushings
  • Machine components for semicondutor, electrical, medical, food processing
  • Aerospace parts



  • Excellent chemical resistance
  • Very low moisture absorption
  • Good wear and abrasion resistance
  • Unaffected by continuous exposure to hot water or steam
  • Good radiation resistance
  • Excellent flexural, impact, and tensile characteristics
  • High strength alternative to fluoropolymers


  • Unfilled
  • Glass filled
  • Carbon Filled

NOTE: Several grades of this material are available. For additional information regarding this plastic, contact your Emco Industrial Plastics representative or call 973-459-4321.

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