Noryl® Plate

Noryl® is a modified PPO/PPE (polyphenylene oxide) alloy that combines excellent dimensional stability, outstanding electrical insulating properties, and the lowest moisture absorption of any engineering thermoplastic. That last characteristic is what sets it apart: because it absorbs virtually no water, Noryl holds tolerance in humid and wet environments where nylon and acetal swell and drift, making it a standard specification for precision parts, electrical components, and water-handling equipment. It offers good impact strength across a broad temperature range, a service temperature near 200°F, inherent flame retardance with UL 94 V-0 and V-1 ratings in standard grades, and strong resistance to acids, bases, and aqueous solutions.

Noryl plate is machined into electrical insulators, terminal blocks, switchgear and panel components, bus bar supports, pump and valve housings, water-meter and fluid-handling parts, fixtures and jigs requiring tight tolerance in humid conditions, and medical and analytical equipment components. It machines cleanly on standard equipment, taps and threads well, and bonds with adhesives. Two limits are worth knowing: Noryl has only moderate resistance to many organic solvents and chlorinated hydrocarbons compared with polyolefins or PVDF, and it is not UV stable in standard grades, so outdoor installations need pigmented or stabilized material. Where a part must stay dimensionally true in a wet or humid environment and carry an electrical or flame requirement, Noryl is usually the right answer.