Custom PSU / PPSU Parts Manufacturing
Plasticpartsmfg engineers and manufactures custom Polysulfone (PSU) and Polyphenylsulfone (PPSU) components from our facility in Shenzhen, China. From rapid functional prototypes via 3-axis and 5-axis CNC machining to tight-tolerance injection molding and bridge production, we deliver autoclave-resistant, dimensionally stable plastic parts built strictly to your CAD models and 2D engineering drawings.
Engineering Quick Reference
- Standard Resins
- Udel® PSU, Radel® PPSU
- Machining Tolerances
- ±0.05 mm (±0.002 in)
- Injection Molding Tol.
- DIN 16742 / ISO 20457
- Sterilization Suitability
- Steam Autoclave, EtO, Gamma
- Supported Quantities
- 1 pc Prototype to 50,000+ pcs
- Inspection Data
- CMM, CoC, Material Certs
Precision Manufacturing for Demanding Sulfone Polymers
Polysulfone (PSU) and Polyphenylsulfone (PPSU) demand precise thermal management and sharp tooling due to high glass transition temperatures (Tg > 185°C) and notch sensitivity. We calibrate processing parameters to eliminate residual stress, micro-cracking, and warpage.
CNC Precision Milling & Turning
Ideal for 1 to 500 parts without tooling investment. We utilize dedicated carbide tools, cryogenic or air-blast cooling, and pre-machining annealing to prevent stress-crazing on complex manifolds, fittings, and test fixtures.
- • Critical bore tolerances down to ±0.02 mm
- • Annealed stock to reduce internal stress
- • Surface finishes up to Ra 0.8 μm as machined
High-Temp Injection Molding
Scalable production from 200 parts (using rapid aluminum/P20 tooling) to high-cavitation steel molds. With oil-heated mold controls up to 180°C, we maintain structural integrity, consistent wall thickness, and low shrink variance.
- • Precise barrel heating profiles up to 390°C
- • Controlled packing pressures to prevent sink marks
- • Masterbatch and medical-grade color blending
Secondary Operations & Assembly
Finished mechanical assemblies ready for field installation. We execute post-machining ultrasonic cleaning, vapor polishing on transparent PSU components, threaded brass insert installation, laser engraving, and serialized labeling.
- • Heat-staking and ultrasonic insertion
- • Hydrostatic and pressure decay testing
- • Individual clean packaging & vacuum sealing
PSU & PPSU Manufacturing Capabilities
Select a manufacturing track based on your project volume, lead time, and tooling budget.
PSU & PPSU Injection Molding Services | Custom High-Performance Parts
Specialized PSU and PPSU injection molding for high-heat, medical, and industrial components. Get fast quotes for your high-performance plastic projects.
View details →
PSU and PPSU CNC Machining Services | Custom High-Performance Plastic Parts
Professional CNC machining for PSU and PPSU components. Precision tolerance, fast turnaround for engineering-grade plastic parts. Request a quote today.
View details →Material Selection: PSU vs. PPSU
Both materials belong to the sulfone polymer family, delivering excellent electrical insulation, flame retardance, and continuous service temperatures above 140°C. Review functional differences below to optimize part performance and part cost:
| Property / Metric | Polysulfone (PSU) | Polyphenylsulfone (PPSU) | Selection Guidance |
|---|---|---|---|
| Impact Strength (Izod Notched) | ~69 J/m (Moderate) | ~690 J/m (Extreme Toughness) | PPSU resists high physical shock and dropped impacts without shattering. |
| Autoclave Resistance (Steam) | Up to 100 cycles | 1,000+ repeated steam cycles | Choose PPSU for reusable surgical handles, trays, and dental tools. |
| Optical Clarity | Amber Transparent / Translucent | Opaque / Amber or Custom Colors | PSU provides fluid visibility in medical sight glasses and flow meters. |
| Heat Deflection Temp (1.8 MPa) | ~174 °C (345 °F) | ~207 °C (405 °F) | PPSU handles elevated sustained operational temperatures. |
| Chemical Resistance | Good resistance to inorganic acids and bases | Superior resistance to lipids, detergents, acids | PPSU resists harsh hospital sanitizers and aggressive cleaning solutions. |
| Raw Material Cost | Lower / Moderate | Premium High-End Resin | PSU is preferred when high mechanical impact resistance is not essential. |
Typical Application Sectors
Engineers integrate our custom PSU and PPSU parts into products requiring thermal endurance and hydrolytic stability under harsh work conditions.
Surgical instrument grips, sterilization cassettes, endoscopic components, fluid manifold blocks, and centrifuge fittings compatible with repeated autoclaving.
Plumbing manifolds, hot water quick-connect couplings, pump impellers, and valve bodies requiring zero hydrolytic degradation and low leaching profiles.
High-temperature electrical insulators, semiconductor test sockets, sensor housings, and wear guides exposed to friction and warm chemical vapors.
Cabin interior brackets, electrical conduits, and environmental control system connectors benefiting from inherent FAR 25.853 flame and smoke compliance.
Request a Custom PSU / PPSU Quote
Submit your 3D CAD files (STEP, IGES, X_T) along with 2D technical drawings (PDF, DWG) indicating critical tolerances, surface finish specifications, and desired batch size. Our engineering team reviews all files for design for manufacturability (DFM) within 24 hours.