Natural Copolymer

PET (old name: PETP) is a partly crystalline thermoplastic Polyester based on Polyethylene-Terephthalate. PET features outstanding dimensional stability, as it is virtually unaffected by ambient moisture.
A low coefficient of friction and excellent wear resistance combined with low creep and high modulus make this the choice material for moving parts. Hot water resistance is low but it has better resistance to acids than Nylon or Acetal.

PET is produced without centreline porosity and is approved for contact with food (BfR, FDA). As it is more rigid than other thermoplastics, please consult our machining guidelines.

Key features

  • For parts with especially high demand on precision. 

Some industries using PET Natural Copolymer

  • Automotive
  • Electric
  • Electronic and semiconductor
  • Food processing
  • Medical
  • Logistics and transport
  • Pharmaceutical
  • Printing

Applications for use include

  • Bushings and bearings
  • Cams
  • Electrical insulators
  • Feeder blocks
  • Filter tracks
  • Food piston pumps
  • Fuel pump components
  • Fuel system connectors and rotors
  • Gears
  • Hamburger and nugget dies
  • Liquid and gas proof parts
  • Locating disks
  • Mandrels
  • Manifolds
  • Wear strips
  • Valves and valve bodies
  • Timing screws



Property Unit of measure Value
Tensile StrengthMpa80
Elongation at Break%20
Modulus of ElasticityMPa3200
Impact Strengthkj/m²2
Compressive StrengthMPa100
Shear StrengthMPa
Shore HardnessD Scale81
Co-efficient of Frictionμ0.25
Water Absorption @ 23 Deg C%0.5
Service Temperature IntermittentᵒC170
Service Temperature ContinuousᵒC110
Melting pointᵒC255
Thermal ConductivityW/m.ᵒC0.29
Dielectric StrengthkV/mm22
Volume ResistivityΩ.cm10¹³
Surface Resistivity10¹⁴
Arc ResistanceSec