PPO Rod

PPO plastic — polyphenylene oxide — is an amorphous engineering thermoplastic distinguished by its exceptionally low moisture absorption, excellent dimensional stability, and reliable electrical insulation. These properties make PPO material a preferred choice for components that must maintain precise geometry and consistent electrical performance across variable temperature and humidity conditions.

PPO offers a strong balance of mechanical strength and heat resistance, performing reliably in applications where dimensional predictability is as important as raw mechanical properties. Its very low moisture uptake prevents the swelling and tolerance drift that can affect polyamides and other moisture-sensitive engineering polymers, making PPO a stable platform for precision-machined electrical and structural components.

Typical applications include electrical housings, precision instrument parts, pump and valve components, and structural assemblies requiring consistent dimensions and stable electrical behavior in variable environments. PPO's combination of moderate cost, good processability, and predictable performance makes it a practical alternative to higher-priced specialty polymers in many applications.

For higher stiffness and improved heat resistance through glass fiber reinforcement, see PPO GF30 — the 30% glass-filled variant. Visit the PPO product page for available sizes and to request a quote.