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Ultem® 2300 is an extruded 30% glass reinforced polyetherimide. It is an amorphous, high performance polymer with exceptional flame and heat resistance. It performs continuously to 340 degrees F (171 degrees C), making it ideal for high strength/high heat applications, and those requiring consistent dielectric properties over a wide frequency range. It is hydrolysis resistant, highly resistant to acidic solutions and capable of withstanding multiple autoclaving cycles. Ultem® 2300 provides greater rigidity and improved dimensional stability while maintaining many of the useful characteristics of Ultem®. Ultem® 2300 commonly is machined into parts for reusable medical devices, analytical instrumentation, electrical/electronic insulators and a variety of structural components requiring high strength and rigidity at elevated temperatures.


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Sheet, Rod, Film

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Stock Products Properties Applications Advantages Grades


Sheet 3/8″ – 2 1/2″ 24″ x 48″ Amber
Rod 1/2″ – 8″ Cut to Size Amber
Film .003″ – .125″ Call for Sizes Amber

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/in^3) D792 0.055
Mechanical PropertiesUnitsASTMResults
Tensile Strength D638 17,000
Tensile Modulus D638 800,000
Tensile Elongation at Break D638 3
Flexural Strength D790 30,000
Flexural Modulus D790 900,000
Compressive Strength D695 32,000
Thermal PropertiesUnitsASTMResults
Coefficient of Linear Thermal Expansion D696 1.1
Flammability Rating UL94 V-0
Electrical PropertiesUnitsASTMResults
Dielectric Strength D149 770
Dissipative Factor at 1 MHz D150 0.0015


  • Aircraft components
  • Electrical components
  • Circuit boards
  • Microwave applications
  • Computer circuity
  • Automotive applications
  • Pump and valve parts


  • High dielectric strength
  • Available in glass reinforced grades
  • High strength
  • Performs in continuous use for 340 degrees F


  • Ultem® 1000
  • Ultem® 2100
  • Ultem® 2200
  • Ultem® 2400
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