PCTFE Sheet, PCTFE Rod, PCTFE Film |Lowest Gas Permeability
Leading Chinese manufacturer of PCTFE sheet, PCTFE rod, PCTFE film for sealing, packaging and optical applications. PCTFE offers zero permeability for demanding applications.
Semi-Finished PCTFE Products: PCTFE Sheet, PCTFE Rod & PCTFE Film for Demanding Environments
In applications where absolute chemical inertness, optical clarity, and dimensional stability are paramount—such as pharmaceutical manufacturing, chemical processing, and aerospace—the choice of base material is critical. PCTFE sheet (Kel-F®) provides the ideal raw material stock. Supplied as precision PCTFE sheets and PCTFE rods, this semi-finished form of polychlorotrifluoroethylene allows engineers and machinists to fabricate high-integrity components like PCTFE gaskets, PCTFE seals, PCTFE tank liners, and PCTFE sight glasses that can withstand the most aggressive media, including strong oxidizers and solvents.
Beyond its unmatched barrier performance, PCTFE offers outstanding chemical resistance, superior mechanical strength compared to PTFE, excellent optical clarity, and maintains its properties across a wide temperature range from -240°C to +200°C. These unique characteristics make PCTFE indispensable in high-pressure sealing, pharmaceutical packaging, cryogenic applications, and precision optical components.
Lowest Permeability
Virtually zero gas and moisture transmission - 10-100X better than other fluoropolymers
Superior Strength
2-3X higher tensile strength and stiffness than PTFE with excellent creep resistance
Optical Clarity
Exceptional transparency for optical windows and lenses in demanding environments
Chemical Resistance
Outstanding resistance to acids, bases, solvents and aggressive chemicals
PCTFE Material Properties & Advantages
Need a plastic with the best barrier properties? PCTFE offers zero permeability for demanding applications where containment is critical.
PCTFE vs. Other High-Performance Plastics
| Property | PCTFE (Kel-F) | PTFE | PEEK | PVDF | Test Method |
|---|---|---|---|---|---|
| Gas Permeability (O₂) | 0.4 cc·mil/100in²·day | 4.0 | 2.5 | 1.8 | ASTM D1434 |
| Water Vapor Transmission | 0.02 g/100in²·day | 0.3 | 0.15 | 0.08 | ASTM E96 |
| Tensile Strength (MPa) | 35-40 | 20-35 | 90-100 | 45-55 | ASTM D638 |
| Flexural Modulus (MPa) | 1,400-1,600 | 400-600 | 3,600-4,000 | 1,400-2,000 | ASTM D790 |
| Compressive Strength (MPa) | 55-65 | 10-15 | 120-130 | 60-70 | ASTM D695 |
| Hardness (Shore D) | 80 | 50-60 | 85 | 75-80 | ASTM D2240 |
| Max Service Temp (°C) | 200 | 260 | 250 | 150 | UL 746B |
| Chemical Resistance | Excellent | Excellent | Good | Very Good | ASTM D543 |
| Optical Clarity | Excellent | Opaque | Opaque | Translucent | Visual |
| Creep Resistance | Excellent | Fair | Excellent | Good | ASTM D2990 |
| Cryogenic Performance | Excellent (-240°C) | Good (-200°C) | Fair (-50°C) | Fair (-40°C) | Various |
| Relative Cost | 3.0-4.0x | 1.0x | 4.0-5.0x | 1.5-2.0x | Market |
Key Advantage: PCTFE delivers the absolute lowest permeability of any thermoplastic, making it irreplaceable for applications requiring complete barrier protection against gases, moisture, and chemicals.
Unmatched Barrier Properties
PCTFE's molecular structure creates an impenetrable barrier to gases and moisture. With permeability rates 10-100 times lower than other fluoropolymers, PCTFE is essential for:
- High-pressure gas sealing systems
- Pharmaceutical blister packaging
- Cryogenic fluid containment
- Vacuum chamber seals
- Moisture-sensitive electronics protection
Superior Mechanical Strength
Unlike PTFE which is soft and prone to creep, PCTFE offers exceptional rigidity and dimensional stability:
- 2-3X higher tensile strength than PTFE
- Excellent resistance to cold flow and creep
- Maintains tight tolerances under load
- Superior wear and abrasion resistance
- Excellent machinability for precision parts
Exceptional Chemical Resistance
PCTFE resists virtually all chemicals except molten alkali metals and elemental fluorine:
- Strong acids (H₂SO₄, HNO₃, HCl) at all concentrations
- Strong bases and caustic solutions
- Organic solvents and aggressive chemicals
- Oxidizing agents and halogens
- No stress cracking in chemical environments
Outstanding Optical Clarity
PCTFE is the only fluoropolymer offering true optical transparency:
- Light transmission up to 90% in thin sections
- Low refractive index (1.42) similar to glass
- Excellent UV resistance without yellowing
- Ideal for optical windows and lenses
- Maintains clarity in harsh chemical environments
PCTFE Products（PCTFE sheet, PCTFE rod, PCTFE film) & Specifications
We manufacture PCTFE in multiple forms to meet your specific application requirements. All products are made from virgin resin with full material traceability.
PCTFE Rods (Kel-F Rods)
Precision extruded PCTFE rods for machining high-performance seals, valves, and mechanical components. Available in natural (translucent) color.
Standard Specifications:
| Diameter (mm) | Length (mm) | Tolerance |
|---|---|---|
| 6 - 10 | 1000 | ±0.1mm |
| 12 - 30 | 1000 | ±0.2mm |
| 32 - 50 | 1000 | ±0.3mm |
| 55 - 100 | 1000 | ±0.5mm |
| 110 - 200 | 500-1000 | ±1.0mm |
Custom sizes available - Contact us for special diameters and lengths
PCTFE Sheets (Kel-F Sheets)
Compression molded PCTFE sheets offering superior flatness and dimensional stability. Ideal for gaskets, seals, and optical windows.
Standard Specifications:
| Thickness (mm) | Width x Length (mm) | Tolerance |
|---|---|---|
| 0.5 - 1.0 | 300 x 300 | ±0.05mm |
| 1.5 - 3.0 | 500 x 500 | ±0.1mm |
| 4.0 - 6.0 | 600 x 600 | ±0.15mm |
| 8.0 - 10.0 | 600 x 600 | ±0.2mm |
| 12.0 - 25.0 | 500 x 500 | ±0.5mm |
Large format sheets up to 1000 x 1000mm available on request
PCTFE Film (Kel-F Film)
Ultra-thin PCTFE film with exceptional barrier properties for pharmaceutical packaging, electronics protection, and specialty applications.
Standard Specifications:
| Thickness (μm) | Width (mm) | Roll Length (m) |
|---|---|---|
| 12 - 25 | 100 - 300 | 100 |
| 30 - 50 | 100 - 500 | 100 |
| 75 - 100 | 100 - 500 | 50 |
| 125 - 250 | 100 - 400 | 50 |
| 300 - 500 | 100 - 300 | 25 |
Custom widths and thicknesses available for high-volume orders
Material Certifications & Quality of Semi-finished PCTFE products
All PCTFE products come with material certification including resin lot traceability, dimensional inspection reports, and compliance with FDA CFR 177.1380 for food contact applications. Custom testing available upon request.
Key Industrial Applications of PCTFE Polymer
PCTFE's unique combination of zero permeability, chemical resistance, and mechanical strength makes it indispensable across demanding industries.
High-Barrier Packaging
PCTFE film provides unmatched protection for moisture-sensitive pharmaceuticals, electronics, and specialty chemicals. Used in blister packs, protective pouches, and hermetic sealing applications.
High-Pressure Sealing
PCTFE's superior mechanical strength and zero permeability make it ideal for valve seats, piston seals, O-rings, and gaskets in high-pressure gas systems, cryogenic equipment, and vacuum chambers.
Optical & Semiconductor
PCTFE's exceptional clarity and chemical resistance make it perfect for optical windows, lenses, and semiconductor wet process equipment exposed to aggressive chemicals and requiring high transparency.
Cryogenic Applications
PCTFE maintains flexibility and sealing performance down to -240°C, making it essential for liquid nitrogen/helium systems, aerospace applications, and superconducting equipment.
Chemical Processing
PCTFE components resist aggressive acids, bases, and solvents while maintaining dimensional stability. Used in pumps, valves, reactors, and fluid handling systems.
Aerospace & Defense
PCTFE's wide temperature range, low outgassing, and barrier properties make it critical for fuel systems, hydraulic seals, and environmental control systems in aircraft and spacecraft.
Why Source PCTFE Sheet, PCTFE Rod, PCTFE Film from Us?
As a leading PCTFE manufacturer in China, we combine advanced production capabilities with rigorous quality control to deliver consistent, high-performance materials at competitive prices.
Factory Direct Supply
We manufacture all PCTFE products like PCTFE sheet, PCTFE rod, PCTFE film in-house using virgin resin from certified suppliers. Direct factory pricing eliminates middlemen, reducing your costs by 20-30% compared to distributors while ensuring complete quality control.
- No minimum order quantities for standard sizes
- Bulk pricing available for large orders
- Fast production lead times (2-4 weeks typical)
- Flexible payment terms for established customers
Rigorous Quality Control
Every batch undergoes comprehensive testing to ensure material purity, dimensional accuracy, and performance characteristics. Our ISO 9001:2015 certified quality system guarantees consistency.
- 100% dimensional inspection with CMM verification
- Material certification with resin lot traceability
- Mechanical property testing per ASTM standards
- Permeability testing for critical applications
- FDA compliance documentation available
Technical Support
Our experienced engineers provide application-specific guidance to help you select the right PCTFE grade and form factor for your requirements. We support you from material selection through production.
- Material selection consultation
- Design for manufacturability review
- Chemical compatibility verification
- Custom machining and fabrication services
- Responsive technical support team
Global Export Experience
With over 15 years of international trade experience, we handle all export documentation and logistics to ensure smooth delivery to your facility anywhere in the world.
- Shipped to 40+ countries worldwide
- Complete export documentation and customs support
- Multiple shipping options (air, sea, express)
- Secure packaging to prevent damage in transit
- English-speaking sales and support team
ISO 9001:2015
Certified Quality Management
FDA CFR 177.1380
Food Contact Compliant
RoHS & REACH
Environmental Compliance