Duratron® T4540 PAI (Torlon®)

Mitsubishi Chemical Advanced Materials
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Data Sheet

Duratron® T4540 PAI is a seal and bearing grade that offers a very low coefficient of friction and good wear properties. It was developed specifically for use in rotating equipment. Its composition is the same as the former Duratron T4340 PAI polyamide-imide and used when larger (especially tubular) shapes are required. Typical applications for Duratron T4540 PAI include labyrinth seals, wear rings, bushings, and bearings of all types. Advantages of Duratron® T4540 PAI:

  • Very low coefficient of friction
  • Good wear properties
  • Developed specifically for use in rotating equipment


  • Labyrinth seals
  • Wear rings
  • Bushings
  • Bearings