Dimensional Stability. Electrical Performance.
PPO is an engineering thermoplastic known for its excellent dimensional stability, low moisture absorption, and electrical properties.
Select a form factor to view real-time inventory, pricing, and custom cut-to-size options.
| Short Description | Color | Thickness | Width | Length | Stock | Price | Add to quote |
|---|---|---|---|---|---|---|---|
| PPO - 0.500" 24 x 36 White Sheet | White | 0.500″ | 24″ | 36″ | Out of stock | Contact | |
| PPO - 0.500" 24 x 48 Black Sheet | Black | 0.500″ | 24″ | 48″ | Out of stock | Contact | |
| PPO - 0.500" 24 x 48 White Sheet | White | 0.500″ | 24″ | 48″ | Out of stock | Contact | |
| PPO - 0.500" 24 x 54 White Sheet | White | 0.500″ | 24″ | 54″ | Out of stock | Contact | |
| PPO - 0.750" 24 x 36 Black Sheet | Black | 0.750″ | 24″ | 36″ | Out of stock | $614.94per sheet | |
| PPO - 0.750" 24 x 36 White Sheet | White | 0.750″ | 24″ | 36″ | Out of stock | Contact | |
| PPO - 0.750" 24 x 48 White Sheet | White | 0.750″ | 24″ | 48″ | Out of stock | Contact | |
| PPO - 1.000" 24 x 48 Black Sheet | Black | 1.000″ | 24″ | 48″ | Out of stock | Contact | |
| PPO - 1.000" 24 x 48 White Sheet | White | 1.000″ | 24″ | 48″ | Out of stock | Contact | |
| PPO - 1.250" 24 x 48 Black Sheet | Black | 1.250″ | 24″ | 48″ | Out of stock | Contact |
| Short Description | Color | Diameter | Length | Stock | Price | Add to quote |
|---|---|---|---|---|---|---|
| PPO - 1.500" dia x 96 White Rod | White | 1.500″ | 96″ | Out of stock | Contact | |
| PPO - 1.750" dia x 48 Natural Rod | Natural | 1.750″ | 48″ | Out of stock | Contact | |
| PPO - 1.750" dia x 60 Natural Rod | Natural | 1.750″ | 60″ | Out of stock | Contact | |
| PPO - 1.750" dia x 96 Natural Rod | Natural | 1.750″ | 96″ | Out of stock | Contact | |
| PPO - 2.500" dia x 120 White Rod | White | 2.500″ | 120″ | Out of stock | Contact | |
| PPO - 7.000" dia x 24 Black Rod | Black | 7.000″ | 24″ | Out of stock | Contact |
Material Overview
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.
Frequently Asked Questions
PPO (polyphenylene oxide) is an amorphous engineering thermoplastic known for very low moisture absorption, excellent dimensional stability, and good electrical insulation. It is used in precision instrument housings, electrical components, and structural parts where stable geometry and reliable electrical performance are required.
PPO GF30 is reinforced with 30% glass fiber, which significantly increases stiffness, reduces creep, and improves thermal stability compared to unfilled PPO. Choose unfilled PPO for better toughness and easier machining; choose PPO GF30 when higher stiffness and dimensional stability under heat and load are needed.
PPO offers better dimensional stability, lower moisture absorption, and higher heat resistance than ABS. ABS machines more easily and has a lower cost. Choose PPO when tight tolerances and stable electrical properties in variable environments are critical.
Ready Plastics stocks PPO in rod and sheet. Contact us or visit the PPO product page for available sizes and cut-to-size options.
Yes. PPO machines well on standard equipment — drilling, turning, milling, and sawing all produce good results. Its amorphous structure provides predictable behavior and good surface finish.
Get a quote on cut-to-size sheets and rods, request a full data sheet, or talk to a plastics engineer. We answer in under two hours, M–F 8am–6pm ET.
