PSU Polysulfone CNC Machining Services
Custom Polysulfone (PSU) Parts Manufactured to Tight Tolerances for Demanding High-Temperature and Sterilization Environments.
STEP / STP / IGS / X_T accepted · NDA available
What Is PSU (Polysulfone)?
Machining of PSU
PSU (Polysulfone) is a high-performance amorphous thermoplastic known for its excellent thermal stability, hydrolysis resistance, and mechanical strength.
Unlike many engineering plastics, PSU maintains its properties after repeated exposure to steam sterilization and hot water environments.
This makes PSU a preferred material for medical devices, laboratory instruments, water treatment systems, and food processing equipment.
Please contact our sales and technical teams to learn about how we can provide high-quality machining PSU Engineering plastic services at a fair and competitive price.
Key Properties of PSU Material
| Property | Typical Value |
| Continuous Service Temperature | 150°C |
| Glass Transition Temperature | 185°C |
| Tensile Strength | 70–75 MPa |
| Density | 1.24 g/cm³ |
| Hydrolysis Resistance | Excellent |
| Steam Sterilization Resistance | Excellent |
| Electrical Insulation | Excellent |
| Transparency | Translucent Amber |
Why Choose PSU for Precision Components?
Excellent Steam Sterilization Resistance
PSU can withstand repeated autoclave cycles without significant loss of mechanical properties.
Ideal for:
- Medical instruments
- Surgical equipment
- Laboratory devices
Outstanding Hydrolysis Resistance
PSU performs exceptionally well in hot water and humid environments.
Suitable for:
- Water treatment systems
- Fluid handling equipment
- Laboratory instruments
High Mechanical Strength
PSU maintains strength and stiffness at elevated temperatures.
Applications include:
- Structural housings
- Connectors
- Precision fixtures
Good Transparency
Natural PSU offers a translucent amber appearance, allowing visual inspection of fluids and internal processes.
FDA-Compliant Material Availability
PSU is widely used in food processing and medical applications requiring regulatory compliance.
PSU Machining Capabilities
Welcome to PlasticPartsCustom, your trusted partner for high-performance PSU machining capabilities. Our state-of-the-art CNC machines and experienced team of engineers and technicians enable us to produce high-precision, complex parts with tight tolerances and exceptional surface finishes, using PSU, a high-performance engineering thermoplastic.
CNC Milling
Our multi-axis machining centers produce complex PSU components with tight tolerances and excellent repeatability.
CNC Turning
We manufacture precision rotational PSU components including:Bushings, Sleeves, Spacers, Insulators, Connector Components
Precision Hole Machining
For applications requiring accurate alignment and assembly:Reamed Holes
Threaded Features, Precision Bores, Tight Positional Tolerances
PSU Grades We Machine
Standard PSU
General-purpose polysulfone suitable for industrial and laboratory applications.
Applications:
- Instrument housings
- Fluid handling systems
- Electrical components
Medical Grade PSU
Manufactured for medical and healthcare applications.
applications:
- Surgical equipment
- Sterilization trays
- Medical device components
FDA-Compliant PSU
Suitable for food contact and processing equipment.
Applications:
- Beverage systems
- Food processing machinery
- Water filtration equipment
Custom PSU Materials
Available forms:
- PSU Rod
- PSU Sheet
- Medical Grade PSU
- FDA-Compliant PSU
Material certifications available upon request.
PSU Parts We Manufacture
Our PSU machining services support a wide range of custom applications.
Semiconductor Components
- Surgical instrument parts
- Sterilization trays
- Diagnostic equipment components
- Medical housings
Laboratory Equipment Components
- Flow cells
- Fluid manifolds
- Analytical instrument parts
- Test chambers
Water Treatment Components
- Valve bodies
- Pump components
- Filtration system parts
Food Processing Equipment Components
- Fluid contact parts
- Inspection windows
- Processing system components
Electrical Components
- Insulators
- Terminal blocks
- Connector housings
Common PSU Machining Challenges We Solve
Our PSU machining services support a wide range of custom applications.
Preventing Internal Stress
Optimized machining strategies reduce stress and dimensional changes.
Maintaining Tight Tolerances
Precision fixturing and process control improve consistency.
Surface Finish Optimization
Specialized tooling improves appearance and functionality.
Complex Fluid Handling Features
Experience machining manifolds, chambers, and precision flow paths.
Quality Assurance
Every PSU component is manufactured under our ISO 9001:2015 quality management system.
Inspection equipment includes:
Mitutoyo CMM
Digital Height Gauges
Micrometers
Calipers
Optical Measurement Equipment
Available documentation:
Material Certificates Certificate of Conformance (COC) First Article Inspection (FAI) Dimensional Inspection Reports
Why Engineers Choose PlasticPartsCustom
| Tight Tolerance Expertise Achievable tolerances up to ±0.01mm. |
| No MOQ Requirements From a single prototype to low-volume production runs. |
| Fast Turnaround Typical prototype lead times from 5–7 working days. |
| Material Expertise Extensive experience machining PSU, PEEK, POM, PTFE, PPS, and other engineering plastics. |
| Reliable Quality Consistent production supported by ISO 9001:2015 procedures and in-process quality control. |
Industries We Serve
- Semiconductor Equipment
- Medical Devices
- Industrial Automation
- Aerospace
- Electronics
- Scientific Instruments
- Energy Systems
PSU vs PEEK: Which High-Performance Engineering Plastic Should You Choose?
PSU (polysulfone) and PEEK are both high-performance engineering plastics with excellent thermal and chemical resistance, but they differ in operating temperature, mechanical strength, and cost.
| Property | PSU (Polysulfone) | PEEK |
|---|---|---|
| Max Service Temperature | 150°C | 250°C (480°F) |
| Glass Transition Temperature | 185°C | 143°C |
| Tensile Strength | 70-75 MPa | 95-100 MPa |
| Steam Sterilization | Excellent (1000+ cycles) | Excellent |
| Hydrolysis Resistance | Excellent | Excellent |
| Transparency | Translucent amber | Opaque (natural beige) |
| Chemical Resistance | Good | Excellent (broader range) |
| Wear Resistance | Good | Excellent |
| Dimensional Stability | Excellent | Excellent |
| Machinability | Good | Good (requires experience) |
| Relative Cost | $$$ | $$$$$ |
| Best For | Medical devices, laboratory equipment, food processing, water treatment, sterilization trays | Medical implants, semiconductor, aerospace, extreme temperature and chemical environments |
Choose PSU if you need excellent steam sterilization resistance (1000+ cycles), good transparency, and a lower-cost alternative to PEEK for medical, laboratory, and food processing applications up to 150°C. Choose PEEK if your application requires higher continuous operating temperature (250°C), superior mechanical strength, broader chemical resistance, or biocompatibility for medical implants.
Not sure which material fits your project? Send us your drawing for a free material recommendation.
Related Materials
Explore other engineering plastics we machine:
| Material | Key Properties | Best For |
|---|---|---|
| PEI (Ultem) | Higher temp 170°C, flame retardant | Aerospace, medical, electrical |
| PEEK | Higher performance, 250°C, biocompatible | Medical implants, extreme environments |
| PC (Polycarbonate) | Impact resistant, cost-effective | Safety shields, medical device housings |
Frequently Asked Questions
Request a Quote for PSU Machining Parts
Whether you need a single prototype or a low-volume production run, our engineering team can help evaluate your design and provide a competitive quotation.
Simply Send Us:
- 2D Drawings (PDF)
- 3D Files (STEP, STP, IGES, X_T)
- Quantity Requirements
- Material Specifications
What You Will Receive
- DFM Feedback
- ✓ Competitive Pricing
- ✓ Lead Time Confirmation
- ✓ Inspection Plan
- ✓ Engineering Support