The addition of polystyrene to PPO increases the glass transition temperature above 100 °C, owing to the high Tg of PPO, so Noryl is stable in boiling water. The precise value of the transition depends on the exact composition of the grade being used. There is a smooth linear relation between weight content of polystyrene and the Tg of the blend. Noryl has good electrical resistance, so is widely used for switch boxes. However, product design is important in maximising the strength of the product, especially in eliminating sharp corners and other stress concentrations. Injection moulding must ensure that mouldings are stress-free.
Noryl has numerous applications in electronics, electrical equipment, coating, machinery, etc.
Noryl has possible applications in the production of hydrogen, where it could serve as cost-effective electrodes in an electrolyzer, replacing expensive rare elements. It is highly resistant against the alkaline potassium hydroxide. For conductivity the plastic is sprayed with a nickel-based catalyst.
Noryl is being investigated as a possible replacement for polycarbonate used in the manufacturing of Blu-ray Discs.