PEI plastics offers:

  - High permanent operating temperature (170°C)
  - High mechanical strength
  - High rigidity
  - High creep resistance over a wide temperature range
  - High dimensional stability
  - Very good resistance to hydrolysis (suitable for repetitive steam sterilisation)
  - Good electrical insulation
  - Good radiation resistance
  - Good chemical resistance to chlorine and caustic/acidic cleaning agents