PET CNC Machining Services
Custom PET (Polyethylene Terephthalate) parts manufactured to tight tolerances for precision engineering, electrical insulation, wear-resistant components, and food-grade applications. PET offers excellent dimensional stability, low moisture absorption, high strength, and outstanding machinability, making it an ideal material for precision-machined plastic parts.
STEP / STP / IGS / X_T accepted · NDA available
What Is PET Plastic?
Machining of PET
PET (Polyethylene Terephthalate) is a semi-crystalline engineering thermoplastic known for its excellent mechanical strength, dimensional stability, electrical insulation properties, and low moisture absorption.
Unlike Nylon materials, PET maintains dimensional accuracy even in humid environments, making it a preferred choice for precision components used in electrical, semiconductor, automation, and food-processing industries.
Please contact our sales and technical teams to learn about how we can provide high-quality machining PET Engineering plastic services at a fair and competitive price.
Key Properties of PET Material
| Property | Typical Value |
| Density | 1.38 g/cm³ |
| Service Temperature | 110-130°C |
| Moisture Absorption | Very Low |
| Tensile Strength | 75–90 MPa |
| Electrical Insulation | Excellent |
| Wear Resistance | Good |
| Dimensional Stability | Excellent |
| Machinability | Excellent |
Why Choose PET for Critical Components?
Excellent Dimensional Stability
PET absorbs very little moisture and maintains tight tolerances over time.
Ideal for:
- Precision assemblies
- Semiconductor fixtures
- Automation equipment
- Electrical components
High Mechanical Strength
PET provides excellent rigidity and strength compared to many standard engineering plastics.
Suitable for:
- Structural components
- Load-bearing parts
- Precision fixtures
Low Moisture Absorption
One of PET’s major advantages over Nylon is its ability to maintain dimensional stability in humid environments.
Benefits include:
- Consistent tolerances
- Improved reliability
- Reduced swelling
Excellent Wear Resistance
PET performs well in applications involving friction and sliding contact.
Applications include:
- Wear strips
- Guide rails
- Rollers
- Bearings
Good Electrical Insulation
Widely used for:
- Electrical components
- Insulating fixtures
- Semiconductor equipment
PET Machining Capabilities
Welcome to PlasticPartsCustom, your trusted partner for high-performance PET 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 PET, a high-performance engineering thermoplastic.
CNC Milling
Our multi-axis machining centers produce complex PET components with tight tolerances and excellent repeatability.
CNC Turning
Manufacturing:
- Bushings
- Rollers
- Sleeves
- Bearing Components
- Seal Rings
Tolerance:
Up to ±0.01 mm
Complex Precision Components
We machine:
- Semiconductor Fixtures
- Vacuum Components
- High-Speed Wear Parts
- Medical Device Assemblies
PET Grades We Machine
Natural PET
The most commonly used engineering grade.
Applications:
- Mechanical parts
- Electrical components
- Precision fixturesAdvantages:
Water Treatment Components
Filter housings
Flow control parts
Support structures
FDA-Compliant PET
Suitable for food-contact applications.
Applications:
- Food processing equipment
- Packaging machinery
- Beverage systems
Static-Dissipative PET (ESD PET)
Designed for sensitive electronic and semiconductor environments.
Applications:
Available Material Forms
Applications:
- PET Rod
- PET Sheet
- PET-P Rod
- PET-P Plate
- ESD PET Stock Shapes
PET Parts We Manufacture
Our PET machining services support a wide range of custom applications.
Electrical Insulators
High-performance insulation components for industrial systems.
Semiconductor Components
Precision-machined fixtures and handling parts.
Mechanical Components
Structural and wear-resistant parts for machinery.
Wear Pads & Guides
Low-maintenance components for sliding applications.
Food Processing Components
FDA-compliant parts for food and beverage equipment.
Automation Equipment Components
Precision components for robotic and automated systems.
Common PET Machining Challenges We Solve
Preventing Internal Stress
Proper machining strategies help maintain dimensional accuracy.
Achieving Tight Tolerances
Precision fixturing and process control ensure repeatability.
Surface Finish Optimization
Specialized tooling improves cosmetic and functional surfaces.
Thin-Wall Component Stability
Careful machining minimizes deformation during production.
Quality Assurance
Available quality documentation:
Material Certificates
COC
FAI Reports
Inspection Reports
Inspection conducted throughout the manufacturing process, not only at final inspection.
Why Choose PlasticPartsCustom for PET Machining?
| Extensive Engineering Plastic Expertise We manufacture precision PET components for customers worldwide in automation, semiconductor, food processing, and industrial sectors. |
| Tight Tolerance Capability Up to ±0.01 mm on critical dimensions. |
| Advanced Inspection Equipment Mitutoyo CMM Vision Measurement Systems Precision Gauges |
| No MOQ From 1-piece prototypes to low-volume production. |
| Fast Lead Times Typical prototypes delivered within 5–7 working days. |
Industries We Serve
- Semiconductor Manufacturing
- Electrical & Electronics
- Industrial Automation
- Food Processing Equipment
- Packaging Machinery
- Medical Equipment
PET vs Nylon (PA6): Which Engineering Plastic Should You Choose for Your Project?
PET and Nylon (PA6) are both versatile engineering plastics for CNC machining, but they differ in moisture sensitivity, wear resistance, and dimensional stability.
| Property | PET | Nylon (PA6) |
|---|---|---|
| Max Service Temperature | 80-100°C | 80-120°C |
| Tensile Strength | 65-75 MPa | 75-85 MPa |
| Wear Resistance | Excellent | Excellent |
| Impact Resistance | Good | Good |
| Moisture Absorption | Low (0.1-0.3%) | High (up to 3%) |
| Dimensional Stability | Excellent (low moisture effect) | Moderate (affected by moisture) |
| Chemical Resistance | Good (acids, oils, solvents) | Good (hydrocarbons, oils) |
| FDA Compliance | Yes (FDA-compliant grades) | Limited |
| Machinability | Good | Good |
| Relative Cost | $$ | $$ |
| Best For | Food packaging machinery, medical devices, electrical components, conveyor parts, dimensional-critical parts | Bearings, bushings, gears, wear pads, structural components, metal replacement |
Choose PET if you need excellent dimensional stability in humid environments, FDA-compliant material for food or medical applications, and good wear resistance for conveyor and electrical components. Choose Nylon (PA6) if your application demands higher tensile strength, superior wear resistance for heavy-load bearings and gears, or cost-effective metal replacement.
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 |
|---|---|---|
| PA6 (Nylon) | Higher strength, wear resistant | Bearings, bushings, structural parts |
| PMMA (Acrylic) | Optical clarity, UV resistant | Optical lenses, displays, signage |
| PC (Polycarbonate) | Impact resistant, transparent | Safety shields, medical housings |
Frequently Asked Questions
Request a Quote for PET Machined 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
Gallery of CNC Machined PET Parts
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