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PSU (polysulfone)

PSU is a thermoplastic with high mechanical strength and stiffness.

In addition to its high continuous service temperature, its salient properties include a remarkably high creep resistance over a wide temperature range. Due to its amorphous molecular structure, PSU is translucent and exhibits a slightly yellowish transparency. In addition, the material has high dimensional stability and very good hydrolysis resistance.


The properties of PSU are:
  • high continuous service temperature (160°C)
  • very good hydrolysis resistance (suitable for repeated steam sterilization)
  • high toughness even at low temperatures
  • high dimensional stability
  • high mechanical strength
  • high rigidity
  • high creep resistance over a wide temperature range
  • very good resistance to high-energy radiation (Gamma and x-rays)
  • good electrical insulating and dielectric properties


The applications of PSU are:
  • Control valves
  • Distributor
  • Inserts for steam cleaning equipment
  • Medical device components


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  • Stefan Geis

    Stefan Geis

    Purchasing and internal sales department Material procurement and order processing
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    Christian Hillebrand

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