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)


Astm Test Method

PET-P (Ertalyte®)

Density (lb/in^3) D792 0.051
Specific Gravity D792 1.41
Water Absorption @ 24 hours (%) D570 0.07


Tensile Strength (PSI) D638 12,400
Tensile Modulus (PSI) D638 460,000
Tensile Elongation at Break (%) D638 20
Flexural Strength (PSI) D790 18,000
Flexural Modulus (PSI) D790 490,000
Compressive Strength (PSI) D695 15,000
Compressive Modulus (PSI) D695 420,000
Izod Impact (Notched), ft-lb/in D256 0.5
Rockwell Hardness D785 M93, R125


Coefficient of Thermal Expansion,
D696 3.3
Heat Deflection Temperature 264 psi, ºF D648 240
Melting Point, °F D3418 491
Continous Service Temp (Operating), °F  – 210
Thermal Conductivity, BTU-in/hr-ft² °F F433 2
Flammability Rating UL94 HB


Dielectric Strength, Short Term,
(Volts/Mil) @ .125″ Thick
D149 385
Volume Resistivity (ohm/square) D257 >10^13
Dielectric Constant at 60HZ D150 3.4
Dissipation Factor at 60HZ D150


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.