Application area: Allmän industri

General facts


Shortening: PAI

Color: Ocher yellow

Common uses: Filled with lubricant, it is used for bearing holders, bearings, bushings, valves, etc. PAI 4301, PAI + Graphite + PTFE (black) is used for rotating parts. PAI 4203 is used for precision parts in high-tech equipment.


  • Withstands high temperatures (+ 260ºC).
  • Only 4% of the tensile stress is lost after 2000h at + 200ºC.
  • UL index 220ºC.
  • Extremely low friction and abrasion in grades filled with
  • PTFE or graphite.
  • Extremely low thermal expansion.
  • Chemical resistant.
  • Mechanical strength values are stably high throughout the temperature range.
  • Extremely dimensionally stable.
  • Excellent durability (PAI 4301).
  • Extremely UV resistant.
  • Extremely resistant to gamma and X-rays.
  • Highest flammability class (UL94-V0).


  • Extremely difficult to injection mold.
  • Attacked by hot alkalis and acids.
  • Some moisture absorption.
  • Not food approved.

Download documents

Material data sheet PAI 4301