What plastic materials do you machine?

We machine engineering plastics including PEEK, PTFE, UHMW-PE, Delrin (POM), Nylon, Acrylic, Polycarbonate, PVC, HDPE, ABS, PPS, PSU, PEI (Ultem), and more. Filled and modified grades available.

What tolerances can you achieve with CNC plastic machining?

We achieve tolerances as tight as +/-0.0005 inches (0.0127mm) on precision CNC machined plastic parts. Standard tolerance is +/-0.005 inches depending on material and geometry.

What is your typical lead time for custom plastic parts?

Standard lead times are 5-15 business days. Rush orders in 3 business days. Rapid prototyping with 48-hour turnaround available.

Do you offer both prototyping and production runs?

Yes. We handle single-piece prototypes to full production of 10,000+ parts. Our flexible setup supports high-mix/low-volume and dedicated production cells.

What industries do you serve?

Automotive, medical device, aerospace and defense, electronics and semiconductor, food processing, packaging, oil and gas, and general industrial manufacturing.

PEEK CNC Machining Services

High-precision PEEK machined components for medical, semiconductor,
aerospace, and industrial applications. 17 years engineering plastic
expertise, ±0.01mm tolerance, factory-direct pricing from Suzhou, China.

ISO 9001:2015 Certified
No Minimum Order Quantity
Prototype to Production
Material Traceability Available
Fast Global Delivery

Upload Your PEEK Drawing

STEP / STP / IGS / X_T accepted · NDA available

What Is PEEK?

Machining of PEEK

PEEK (Polyether Ether Ketone) is a semi-crystalline high-performance thermoplastic known for its exceptional combination of:

High temperature resistance
Mechanical strength
Chemical resistance
Wear resistancepei
Biocompatibility

PEEK is widely used as a lightweight alternative to metal in applications requiring reliability under extreme conditions.

PlasticPartsCustom has offered precision PEEK plastic machining services over 17 years. so we can integrate different processing methods depending on the industry and the purpose. Our machinery is capable of tolerances of +/-0.01 mm. We can produce complex and accurate prototypes very quickly, and the prices are excellent.

Please contact our sales and technical teams to learn about how we can provide high-quality machining PEEK plastic services at a fair and competitive price.

PEEK Machinability

PEEK machinability describes how effectively the material can be processed using CNC techniques like milling, turning, and drilling. Although PEEK offers high durability and wear resistance, it can be difficult to machine because of its toughness and sensitivity to heat buildup, which may lead to work-hardening or dimensional instability if not properly controlled.

To achieve optimal machining results, it is essential to use sharp carbide or ceramic cutting tools, maintain appropriate cutting speeds and feed rates, and apply cooling or lubrication to manage heat. With the right machining strategy, so PEEK components can achieve excellent surface finish and tight tolerances without compromising their inherent material properties.

Why Choose PEEK for Precision Components?

250°C continuous use — outperforms most engineering plastics at high temperature
Excellent chemical resistance — withstands solvents, acids, and hydrocarbons
High strength-to-weight — 70% lighter than steel with comparable stiffness
Low outgassing — suitable for vacuum chambers and cleanroom environments
Wear and friction — self-lubricating, ideal for bearings and seals
Biocompatible — ISO 10993 compliant grades available for medical implants

Key Properties of PEEK Material

Property	Typical Value
Continuous Service Temperature	250°C
Melting Point	343°C
Tensile Strength	95–100 MPa
Density	1.30 g/cm³
Water Absorption	Very Low
Wear Resistance	Excellent
Chemical Resistance	Excellent
Biocompatibility	Available

Why Choose PEEK for Critical Components?

High Temperature Performance

Continuous operating temperature up to 250°C.
Suitable for:

Semiconductor equipment
Aerospace systems
Medical sterilization environments

Excellent Mechanical Strength

PEEK maintains strength under load and elevated temperatures.
Ideal for:

Structural components
Load-bearing assemblies
Precision fixtures

Outstanding Chemical Resistance

Resistant to:

Acids
Solvents
Hydrocarbons
Industrial chemicals

Excellent Wear Resistance

Suitable for:

Bushings
Bearings
Wear rings
Sliding components

Biocompatibility

Medical-grade PEEK is commonly used in:

Surgical devices
Orthopedic applications
Dental systems

PEEK Machining Capabilities

Welcome to PlasticPartsCustomnologies, your trusted partner for high-performance PEEK 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 PEEK, a high-performance engineering thermoplastic.

CNC Milling

Our multi-axis machining centers produce complex PEI components with tight tolerances and excellent repeatability.

CNC Turning

Manufacturing:

Bushings
Rollers
Sleeves
Bearing Components
Seal Rings

Tolerance:

Up to ±0.01 mm

Tight Tolerance Machining

Tolerance capability:

Up to ±0.01mm

depending on geometry and design requirements.

Complex Geometries

We manufacture:

Semiconductor fixtures
Medical assemblies
Automation components
Aerospace parts

PEEK Grades We Machine

Natural PEEK

Most common grade.

Applications:

Semiconductor
Medical
Industrial equipment

Glass-Filled PEEK

Higher stiffness and dimensional stability.

Applications:

Structural parts
Fixtures
Precision tooling

Carbon-Filled PEEK

Improved wear resistance.

Applications:

Bearings
Bushings
Sliding components

Bearing Grade PEEK

Optimized for friction and wear applications.

Applications:

High-speed machinery
Automation systems

Medical Grade PEEK

Applications:

Surgical instruments
Medical devices
Dental equipment

PEEK Parts We Manufacture

Our PEEK machining services support a wide range of custom applications.

Semiconductor Components

Wafer handling parts
Vacuum chamber fixtures
Insulators
Precision guides

Medical Device Components

Surgical instrument parts
Sterilization-resistant components
Imaging equipment components

Aerospace Components

Lightweight brackets
Thermal insulation parts
Structural assemblies

Industrial Automation Components

End-of-arm tooling
Sensor mounts
Wear components

Common PEEK Machining Challenges We Solve

Preventing Thermal Distortion

PEEK machining requires careful temperature control to maintain dimensional accuracy.

Maintaining Tight Tolerances

Advanced fixturing and inspection systems ensure repeatability.

Surface Finish Optimization

Optimized tooling delivers high-quality surface finishes.

Cost Reduction Through DFM

Engineering review helps reduce machining time and material waste.

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 PEEK Machining?

Engineering Plastic Expertise
Over 10 years of experience machining high-performance plastics.

Tight Tolerances
Precision machining up to ±0.01 mm.

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.

Medical Device PEEK Components

PEEK is increasingly replacing metal in implants and surgical tools. Our PEEK CNC machined parts are used in spinal implants, trauma fixation devices, dental abutments, and surgical instrument handles. ISO 10993 biocompatible grades available with full material traceability.

Semiconductor Equipment PEEK Parts

PEEK’s low outgassing and chemical resistance make it the material of choice for wafer handling end-effectors, vacuum chamber components, CMP rings, and cleanroom fixtures. Our PEEK machined parts meet the stringent purity requirements of leading semiconductor fabs.

Aerospace and Industrial PEEK Applications

Lightweight PEEK components reduce weight in aircraft interiors, wire harness brackets, and engine bay parts. In industrial settings, PEEK gears, seals, and pump components outlast metal alternatives in chemically aggressive and high-temperature environments.

PEEK vs PTFE: Which Engineering Plastic Is Right for Your Project?

PEEK and PTFE (Teflon) are two of the most popular high-performance engineering plastics for CNC machining, but they serve different application needs. Here is a direct comparison to help you choose.

Property	PEEK	PTFE (Teflon)
Max Service Temperature	250°C (480°F)	260°C (500°F)
Tensile Strength	95-100 MPa	25-30 MPa
Hardness	Shore D 85-90	Shore D 50-65
Wear Resistance	Excellent	Good
Chemical Resistance	Excellent	Excellent (inert)
Coefficient of Friction	0.30-0.38	0.05-0.08 (lowest)
Water Absorption	0.1% (very low)	0.01% (near zero)
Biocompatibility	ISO 10993 (medical grade)	USP Class VI
Relative Cost	$$$$	$$$
Best For	Structural, load-bearing, high-temp	Seals, bearings, chemical, non-stick

Choose PEEK if your application requires high mechanical strength, load-bearing capability at elevated temperatures, or biocompatibility for medical implants. Choose PTFE if you need the lowest friction, complete chemical inertness, or a more economical option for seals and gaskets.

Not sure which material fits your project? Send us your drawing for a free material recommendation.

Learn more about PTFE CNC machining →

Related Materials

Explore other engineering plastics we machine:

Material	Key Properties	Best For
PTFE (Teflon)	Chemical inertness, low friction, 260°C	Seals, gaskets, chemical-resistant parts
POM (Acetal/Delrin)	Dimensional stability, low friction, 100°C	Gears, bearings, precision mechanical parts
PEI (Ultem)	High strength, flame retardant, 170°C	Aerospace, medical, electrical components

Frequently Asked Questions

PEEK (Polyether Ether Ketone) is a high-performance engineering thermoplastic known for its exceptional strength, chemical resistance, wear resistance, and ability to withstand continuous operating temperatures up to 250°C. These properties make it an ideal material for precision-machined components used in medical, semiconductor, aerospace, and industrial applications.

Yes. PEEK can be machined to very tight tolerances when proper tooling, fixturing, and machining strategies are used. Depending on part geometry and feature size, tolerances up to ±0.01 mm can be achieved for critical dimensions.

PEEK cannot replace metal in every application, but it offers an excellent strength-to-weight ratio and can successfully replace aluminum, stainless steel, or other metals in many applications where weight reduction, chemical resistance, or electrical insulation is required.

Yes. PEEK is highly resistant to repeated sterilization methods, including steam autoclaving, gamma radiation, and chemical sterilization. This makes it a preferred material for medical and laboratory equipment components.

Yes. We support everything from one-piece prototypes to low-volume production runs. With no minimum order quantity requirement, customers can validate designs quickly before moving to larger production volumes.

Yes. Material traceability and certificates are available upon request.

Request a Quote for PEEK 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.