Noryl / PPO

The ideal balance of dimensional stability, strength and moisture resistance.

While many amorphous thermoplastics lose strength at elevated temperatures, NORYL®/PPO retains its rigidity, impact strength and dimensional stability — even at 230°F continuous use. This balance of properties, coupled with inherent moisture and chemical resistance, makes it ideal for a wide range of electrical insulation components.

For added strength and stiffness, NORYL®/PPO can be reinforced with glass fiber fill. The material is easily machined, available in stock shapes, and can be thermoformed.


  • Polyphenylene oxide and styrene
  • Lightweight amorphous thermoplastic


  • Very high impact and surface strength
  • Exceptional dimensional stability
  • Very low moisture absorption
  • Excellent electrical properties over wide frequency range
  • Flame resistant & self-extinguishing (V-O UL-94 rating)
  • Minimal creep
  • Chemical resistant
  • Maintains properties up to 230°F continuous use


  • Electrical insulators and components
  • Computer and business equipment
  • Aircraft instrumentation
  • Shafts, gear wheels, spacer

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