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Material Information

Ertalyte® PET-P is an unreinforced, semi-crystalline thermoplastic polymer based on the polyethylene terephthalate (PET-P). PET-P in general is known to have the best dimensional stability, excellent wear resistance, a low coefficient of friction, high strength and rigidity, excellent stain resistance, good chemical and abrasion resistance, and resistance to moderately acidic solutions. Ertalyte® PET-P has a continuous service temperature of 210º F and also retains significantly more of its original strength than nylon or acetal up to 180º F. Because of its low moisture absorption rate, Ertalyte® PET-P’s mechanical and electrical properties are virtually unaffected by moisture. These properties combined make Ertalyte® PET-P ideal for use in the manufacture of precision mechanical parts. It is available in a natural and black color in the form of rod and plate. Both colors are FDA compliant, but only the natural color is also USDA, 3A-Dairy and Canada AG compliant.


  • Food processing
  • Equipment industries
  • Water and soft drink bottles
  • Process and test equipment manifolds
  • Carousels
  • Filter tracks
  • Rings, disks, rollers
  • Fuel pump components
  • Printing equipment


  • Superior dimensional stability
  • Excellent wear resistance
  • Low coefficient of friction
  • Very good chemical resistance
  • Low water absorption
  • Stain resistant
  • FDA compliant (natural and black)
  • USDA, 3A-Dairy, Canada AG compliant (natural)


PhysicalAstm Test MethodPET-P (Ertalyte®)
Density (lb/in^3)D7920.051
Specific GravityD7921.41
Water Absorption @ 24 hours (%)D5700.07
Tensile Strength (PSI)D63812,400
Tensile Modulus (PSI)D638460,000
Tensile Elongation at Break (%)D63820
Flexural Strength (PSI)D79018,000
Flexural Modulus (PSI)D790490,000
Compressive Strength (PSI)D69515,000
Compressive Modulus (PSI)D695420,000
Izod Impact (Notched), ft-lb/inD2560.5
Rockwell HardnessD785M93, R125
Coefficient of Thermal Expansion,
Heat Deflection Temperature 264 psi, ºFD648240
Melting Point, °FD3418491
Continous Service Temp (Operating), °F210
Thermal Conductivity, BTU-in/hr-ft² °FF4332
Flammability RatingUL94HB
Dielectric Strength, Short Term,
(Volts/Mil) @ .125″ Thick
Volume Resistivity (ohm/square)D257>10^13
Dielectric Constant at 60HZD1503.4
Dissipation Factor at 60HZD150

Disclosure: The information contained herein 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.


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