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Ertalyte® is an unreinforced semi-crystalline thermoplastic polyester based on polyethylene teraphalate (PET-P).


Ertalyte® PET-P offers dimensional stability coupled with excellent wear resistance, low coefficient of friction, high strength, and resistance to moderate acid solutions.

Ertalyte’s® properties make it especially suitable for the manufacture of precision mechanical parts which are capable of sustaining high loads and enduring wear conditions.

Ertalyte® has a continuous service temperature of 210°F (100°C) and its melting point is almost 150°F higher than acetals.

Ertalyte® is FDA compliant in natural and black colors. Natural Ertalyte® is also USDA, 3A-Dairy and Canada AG compliant. It is an excellent candidate for parts used in the food processing and equipment industries.

Ertalyte® TX is an internally lubricated version of PET-P, providing enhanced wear and inertness over general purpose nylons or acetals. Containing uniformly dispersed solid lubricant, Ertalyte® TX provides a lower wear rate and coefficient of friction than unmodified PET or PBT and even internally lubricated materials such as Delrin® AF.


  • Good for both wet and dry environments
  • High strength and rigidity
  • Excellent stain resistance
  • Good wear resistance
  • Excellent dimensional stability
  • Better acid resistance than nylon or acetal


  • Food processing equipment components
  • Process and test equipment manifolds
  • Carousels
  • Filter tracks
  • Rings, discs, rollers
  • Fuel pump components
  • Fuel system connectors and rotors

ERTALYTE is a registered trademark of Quadrant DSM Polymer Corporation.