PET CNC Machining Services
Precision CNC machining of PET (polyethylene terephthalate, PET-P/Ertalyte) parts for prototypes, low-volume production, and repeat manufacturing. Based in Dongguan, China, PlasticCNCPro helps global OEMs and engineering teams turn drawings and CAD models into reliable PET components with consistent tolerances and surface quality.
We focus exclusively on machining plastics and engineering polymers—offering material guidance, manufacturability review, clear quotations, and export-ready delivery for international B2B buyers.
Why Choose PET for Machined Parts
PET (often marketed as PET-P or Ertalyte) is a semi-crystalline engineering polyester that machines cleanly and delivers a strong balance of dimensional stability and wear performance. It is well suited to applications where moisture resistance, low creep, and good friction behavior are important.
Dimensional stability
Low moisture absorption — more stable than nylon in humid environments. Maintains precision tolerances over time.
Strength and rigidity
Good strength and stiffness with low creep under load, making it reliable for structural and mechanical parts.
Low friction and wear
Excellent tribological properties — low friction, good wear resistance, and resists abrasion in sliding contact applications.
Chemical resistance
Resists oils, greases, and many cleaning agents — ideal for industrial processing and fluid-handling environments.
Electrical insulation
Inherent dielectric properties make PET suitable for insulating components in electrical and electronic equipment.
Food-contact options
Food-contact grades available upon request for suitable applications requiring FDA or EU compliance.
Note: When you need higher heat capability than acetal, better moisture stability than nylon, or a lower-cost alternative to PEEK for moderate temperatures, PET is a strong candidate.
Our PET CNC Machining Capabilities
We combine engineering-grade CNC milling and turning with deep experience in polymer behavior to deliver PET components that meet demanding specifications.
Processes
- - CNC milling, turning, drilling, tapping, threading
- - Slotting, pocketing, profiling, complex geometries
- - Custom fixturing and process planning
- - Press-fit features and insert installation
Precision Features
- - Tight-tolerance bores, bearing seats, flatness control
- - Threads (metric/imperial), countersinks, counterbores
- - Reamed holes, concentricity and roundness control
- - GD&T to project requirements
Typical Tolerances
- - General dimensions: ±0.05 mm
- - Critical features: ±0.02 mm (after review)
- - Surface roughness: Ra 0.8–3.2 μm
Note on Tolerances
Achievable tolerances depend on material lot, part size, wall thickness, machining strategy, and inspection temperature. We confirm feasible limits during quotation.
PET Grades We Machine
Ertalyte-type
Natural and black stock grades for general-purpose precision machining.
Lubricated / Wear-Optimized
Enhanced friction and wear performance for sliding and bearing applications.
Glass-Fiber-Reinforced
Higher stiffness, reduced machinability — suitable for structural parts.
Food-Contact Compliant
Available upon request with suitable documentation for regulated industries.
Antistatic / Modified
Case-by-case availability for ESD-sensitive environments.
Custom Specifications
If your application requires specific certifications or traceability, let us know during RFQ.
Typical PET Applications We Manufacture
From mechanical drive components to fluid-handling parts, our PET machining supports a wide range of industrial applications.