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Sustadur® PET thermoplastic polyester products are semi-crystalline materials that offer good wear resistance along with a combination of excellent thermal stability and chemical resistance.

Sustadur® PET (polyethylene terephthalate) offers higher strength and stiffness over acetal, nylon and PBT. This product has outstanding dimensional stability by virtue of low moisture absorption and a low coefficient of thermal expansion.

Brand Names

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
Polyethylene Terephthalate Polyester

Available In
Sheet, Rod

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Technical Information

Stock Products Properties Applications Advantages Grades

Stock Products

Sheet 1/4″ – 4″ 48″ x 96″; CTS Natural & Black
Rod 3/16″ – 5″ DIA CTS Natural & Black

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 0.0499
Water Absorption, 24 hrs % D570 0.10
Mechanical PropertiesUnitsASTMResults
Tensile Strength @Yield psi D638 12500
Tensile Elongation @Break % D638 20
Flexural Strength psi D790 17600
Flexural Modulus psi D790 430000
IZOD Impact Strength Notched ft-lb/in D256 0.70
Thermal PropertiesUnitsASTMResults
Coefficient of Linear Thermal Expansion µin/in-°F D256 3.9
Heat Deflection Temp at 66 psi °F D648
Heat Deflection Temp at 264 psi °F
Max Operating Temp °F 320
Flammability Rating UL94 HB
Electrical PropertiesUnitsASTMResults
Dielectric Strength V/mil D149 400
Dielectric Constant @1 KHz D150 3.4
Dissipation Factor @ 60 Hz D150 0.002
Optical PropertiesUnitsASTMResults
3mm Transparent Clear Transmittance, Total (%) % D1003
Refractive Index %

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.


  • Water purification systems
  • Printing equipment
  • Textile components
  • Food-handling equipment
  • Valves


  • Excellent wear resistance
  • Low coefficient of friction
  • Very good chemical resistance
  • No centerline perosity
  • Good electrical insulator
  • High mechanical strength
  • Excellent hardness and stiffness
  • Good weather resistance
  • Low water absorption
  • Good resistance to high energy radiation.


NOTE: Several grades of this material are available. For additional information regarding this plastic, contact your Emco Industrial Plastics representative or call 973-862-4148.

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