PCTFE CNC Machining Services
Custom PCTFE (Polychlorotrifluoroethylene) Parts Manufactured to Tight Tolerances for Ultra-Low Temperature, Gas Sealing and High-Purity Environments.
STEP / STP / IGS / X_T accepted · NDA available
What Is PCTFE?
Machining of PCTFE
PCTFE (Polychlorotrifluoroethylene) is a high-performance fluoropolymer known for its exceptional moisture resistance, ultra-low gas permeability, and outstanding performance at cryogenic temperatures.
Among fluoropolymers, PCTFE offers one of the lowest gas transmission rates, making it the preferred material for sealing and fluid control systems used with cryogenic liquids and high-purity gases.
Please contact our sales and technical teams to learn about how we can provide high-quality machining PCTFE Engineering plastic services at a fair and competitive price.
Key Properties of PCTFE Material
| Property | Typical Value |
| Continuous Service Temperature | -240°C to +150°C |
| Moisture Absorption | Extremely Low |
| Gas Permeability | Extremely Low |
| Chemical Resistance | Excellent |
| Density | 2.10 g/cm³ |
| Dimensional Stability | Excellent |
| Electrical Insulation | Excellent |
| Cryogenic Performance | Outstanding |
Why Choose PCTFE for Critical Components?
Outstanding Cryogenic Performance
PCTFE retains mechanical integrity at extremely low temperatures.
Suitable for:
- Liquid nitrogen systems
- Liquid oxygen systems
- LNG equipment
- Aerospace cryogenic systems
Ultra-Low Gas Permeability
PCTFE provides one of the best gas barrier performances among engineering plastics.
Ideal for:
- Gas seals
- Valve seats
- High-purity gas delivery systems
- Vacuum technology
Excellent Moisture Resistance
Near-zero moisture absorption helps maintain dimensional stability.
Ideal for:
- Precision sealing systems
- Semiconductor equipment
- Analytical instruments
High Dimensional Stability
Critical for:
- Precision valve components
- Aerospace hardware
- Semiconductor process equipment
Strong Chemical Resistance
Resistant to a broad range of industrial chemicals and process fluids.
PCTFE Machining Capabilities
Welcome to PlasticPartsCustom＼, your trusted partner for high-performance PCTFE 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 PCTFE, a high-performance engineering thermoplastic.
CNC Milling
Our multi-axis machining centers produce complex PCTFE 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
PCTFE Grades We Machine
Virgin PCTFE
The most commonly specified grade for cryogenic and sealing applications.
Applications:
- Valve seats
- Cryogenic seals
- Semiconductor equipment
High-Purity PCTFE
Manufactured for contamination-sensitive systems.
Applications:
- Semiconductor gas delivery systems
- Analytical instrumentation
- Vacuum systems
Aerospace Grade PCTFE
Specified for aerospace and defense applications requiring dimensional consistency and cryogenic performance.
Applications:
- Fuel systems
- Cryogenic assemblies
- Sealing components
Available Material Forms
- PCTFE Rod
- PCTFE Sheet
- PCTFE Tube
- Molded PCTFE Billets
Custom PCTFE Parts We Manufacture
Our PCTFE machining services support a wide range of custom applications.
Cryogenic Valve Components
- Valve seats
- Valve inserts
- Sealing elements
LNG Equipment Components
- Flow control parts
- Cryogenic fittings
- Precision sealing assemblies
Aerospace Components
- Fuel system seals
- Cryogenic hardware
- High-reliability fluid system parts
Semiconductor Components
- Gas delivery system parts
- High-purity valve components
- Process equipment components
Vacuum Equipment Components
- Vacuum seals
- Insulators
- Precision containment systems
Common PCTFE Machining Challenges We Solve
Maintaining Tight Tolerances
Precision sealing applications require strict dimensional control.
Preventing Material Stress
Optimized machining parameters improve stability and reliability.
Machining Thin-Wall Components
Special fixturing minimizes deformation.
Surface Finish for Sealing Applications
Fine machining techniques improve sealing performance.
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 PCTFE 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. |
Industries We Serve
- Aerospace & Defense
- Cryogenic & LNG Systems
- Semiconductor Manufacturing
- Vacuum Technology
- Laboratory & Analytical Equipment
PCTFE vs PTFE: Which Fluoropolymer Should You Choose for Your Project?
PCTFE (polychlorotrifluoroethylene) and PTFE (Teflon) are both high-performance fluoropolymers, but PCTFE offers superior mechanical strength and cryogenic performance while PTFE excels in temperature range and chemical inertness.
| Property | PCTFE | PTFE (Teflon) |
|---|---|---|
| Max Service Temperature | 175°C | 260°C (500°F) |
| Cryogenic Performance | Excellent (down to -240°C) | Good (down to -200°C) |
| Tensile Strength | 35-50 MPa | 25-30 MPa |
| Gas Permeability | Lowest of all fluoropolymers | Moderate |
| Moisture Absorption | Near Zero | Near Zero |
| Chemical Resistance | Excellent | Excellent (inert) |
| Dimensional Stability | Excellent | Moderate |
| Friction Coefficient | Low | Extremely Low (0.05-0.10) |
| Machinability | Good | Moderate (soft, prone to deformation) |
| Relative Cost | $$$$ | $$$ |
| Best For | Cryogenic seals, LNG equipment, vacuum components, aerospace, high-purity chemical handling | Seals, gaskets, chemical-resistant liners, electrical insulation, non-stick applications |
Choose PCTFE if you need superior cryogenic performance (down to -240°C), the lowest gas permeability of any fluoropolymer, or higher mechanical strength for demanding sealing applications. Choose PTFE if your application requires higher continuous service temperature (up to 260°C), the lowest possible friction, or a more cost-effective fluoropolymer solution.
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 |
|---|---|---|
| PTFE (Teflon) | Higher temp 260°C, broader chemical resistance | Seals, gaskets, chemical-resistant parts |
| PVDF | High purity, 150°C, good mechanical strength | Semiconductor, water treatment, chemical |
| PEEK | High strength, 250°C, biocompatible | Medical implants, aerospace, semiconductor |
Frequently Asked Questions
Request a Quote for PCTFE 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
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