PEEK (polyetheretherketone)

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Performance Characteristics
Typical Applications
Typical Properties
PEEK is a strong and stiff plastic material that is often used in applications where performance at elevated temperatures is required.

PEEK has outstanding chemical resistance as well as resistance to steam and hot water.

Virgin PEEK or unfilled PEEK is naturally abrasion resistant. Bearing grade PEEK has enhanced bearing and wear properties.

Victrex PEEK Plastic Whitepaper - for Oil and Gas, Aerospace, Semiconductor, etc.

Performance Advantages of Victrex® PEEK™

Victrex® PEEK™ plastics help solve challenging applications
in demanding industries such as aerospace, oil and gas, and semiconductor.

Learn how the properties of Victrex® PEEK™ compare to other thermoplastics.

Get the PEEK Plastic Whitepaper

PEEK Standard Sizes

SHEET 24"x48" (0.03"-2.0" thick)
ROD diameter 0.25"-6.0"
TUBE call for availability

  • Length, width, thickness, and diameter tolerances vary by size and by manufacturer
  • Custom sizes and colors available upon request
  • Many of our plastic materials are available as films with thicknesses of 0.029" or less

PEEK Grades

  • Bearing
  • Glass-filled
  • FDA compliant

NOTE: Several grades of PEEK are available. For additional information on PEEK plastic materials, contact your local Curbell Plastics representative or call Curbell at 1-888-287-2355.
Performance Characteristics
  • Strong and stiff plastic
  • Outstanding chemical resistance
  • Good mechanical properties at elevated temperatures
  • Resistant to hot water and steam
  • Bearing grade PEEK has excellent wear characteristics
  • UL 94 V-0 flammability rating (0.059" thickness)
  • Very low smoke and toxic gas emissions when exposed to flame
Typical Applications
  • Semiconductor machinery components
  • Aerospace parts
  • Seals
  • Pump and valve components
  • Bearings and bushings (bearing grade PEEK)
  • Electrical components
  • Medical instrument parts
  • Food processing machinery components
Typical Properties
Tensile strength psi D-638 14,000 24,620
Flexural modulus psi D-790 590,000 1,450,000
Izod impact (notched) ft-lbs/in of notch D-256 1.6 1.84
Heat deflection temperature @ 264 psi °F D-648 306 599
Maximum continuous service temperature in air °F 480 482
Water absorption Immersion 24 hours % D-570 0.50 0.11
Coefficient of linear thermal expansion in/in/°Fx10-5 D-696 2.6 1.2
Coefficient of friction (dynamic) 0.25 0.30
Values may vary according to brand name. Please ask your Curbell Plastics representative for more specific information about an individual brand.
Tensile Strength
of PEEK compared with PPS and PEEK GF30
Bar chart - PEEK tensile strength compared with PPS and PEEK GF 30
Heat Deflection Temperature
of PEEK compared with PPS and PEEK GF30
Bar chart - PEEK plastic heat deflection temperature compared with PPS and PEEK GF 30
Contact Curbell Plastics at 1-888-287-2355 for more specific information about PEEK plastic or complete our request for quote online form.