High-Performance PCTFE Rods for Seals, Valves & Precision Part
Get stable, traceable PCTFE rods made with certified Neoflon resin, designed for tight-tolerance machining and extreme low-temperature sealing.
- Custom PCTFE rods with strict tolerance control
- China factory using traceable Neoflon resin
- Stable batches for cryogenic valve manufacturing
What is PCTFE Rod
What do you look for when sourcing a stable material for cryogenic valves, high-vacuum systems, or precision gas-barrier parts?
PCTFE rod (also named Kel-F rod or polychlorotrifluoroethylene rod) is a rigid fluoropolymer known for its low gas permeability, low moisture absorption, and excellent stability from –240°C to +150°C. It delivers stronger dimensional control and lower creep than PTFE, which is why engineers choose it for valve seats, O-rings, pump components, and CNC-machined parts used in demanding environments.
As a PCTFE rod manufacturer, Peflon supplies rods produced with certified Neoflon resin, full REACH/FDA documentation, and consistent extrusion control. You get reliable machining performance, traceable batches, and a steady long-term supply for your sealing projects.
Contact us to request samples, datasheets, or custom diameters.
Properties & Characteristics of PCTFE Rod
PCTFE rod offers a unique balance of rigidity, low moisture absorption, and very low gas permeability. This makes it ideal for cryogenic valves, vacuum systems, and high-pressure sealing parts. Unlike PTFE, PCTFE rod provides tighter dimensional control and lower creep, helping you achieve consistent machining results and stable long-term performance.
With its chemical resistance, non-flammability, and strong insulation properties, polychlorotrifluoroethylene rod is widely used for O-rings, valve seats, pump components, and precision CNC parts in demanding environments. Its polymer backbone carries the CAS 9002-83-9 identity used across compliance documentation.
| Property | Typical Value (PCTFE Rod) | Notes |
|---|---|---|
| Material Name | PCTFE (Polychlorotrifluoroethylene) | Also known as Kel-F / Neoflon |
| Operating Temperature | -240°C to +150°C | Excellent cryogenic performance |
| Density | 2.10–2.20 g/cm³ | Higher than PTFE for better rigidity |
| Tensile Strength | 38–52 MPa | Stable strength at low temperatures |
| Compressive Strength | 80–110 MPa | Good for high-pressure sealing |
| Flexural Modulus | 1,700–2,200 MPa | High stiffness |
| Creep Resistance | Excellent | Better dimensional stability than PTFE |
| Water Absorption | < 0.01% | Extremely low moisture uptake |
| Gas Permeability | Very Low | Suitable for vacuum and gas systems |
| Chemical Resistance | Excellent | Withstands acids, solvents, and oxidizers |
| Dielectric Strength | 16–24 kV/mm | Reliable insulation properties |
| Flammability | Non-flammable / V-0 | Self-extinguishing behavior |
| Machinability | Good | Recommended for CNC precision parts |
Types of our PCTFE Rod
You can choose the right PCTFE rod based on your sealing needs, machining process, and operating temperature. Peflon offers multiple grades and diameters of polychlorotrifluoroethylene rods to support cryogenic valves, vacuum systems, high-pressure seals, and precision CNC components. Each category is designed to give you stable dimensions, clean machining, and reliable long-term performance. Contact us for custom sizes or application guidance.
Cryogenic-Grade PCTFE Rod for Valve Seats
This cryogenic-grade PCTFE rod is made for valve seats, O-rings, and pump components that run at extremely low temperatures. It offers predictable rigidity and stable mechanical behavior down to –240°C. You get clean machining performance, minimal deformation, and steady sealing under cold gas or liquid service.
High-Vacuum PCTFE Rod for Gas-Barrier Components
This vacuum-grade PCTFE rod is used for gas-barrier components in vacuum chambers, semiconductor tools, and pressure-control systems. Its very low gas permeability and low outgassing help you maintain clean, stable performance in high-vacuum environments.
PCTFE Rod Stock for CNC Precision Machining
This PCTFE rod stock is optimized for CNC machining where tight tolerances are required. It provides steady chip control, good tool life, and consistent surface finish. You can use it to produce spacers, seats, insulators, and custom sealing parts in short-run or high-volume production.
Chemical-Resistant PCTFE Rod for High-Purity Systems
This chemical-resistant PCTFE rod is suitable for fluid systems that handle acids, oxidizers, and high-purity media. The material maintains strength and surface integrity under harsh conditions, making it a safe choice for laboratory instruments, sampling valves, and chemical-metering assemblies.
PCTFE Rod by size
| Size | Dimensions (mm) |
|---|---|
| PCTFE Rod 0.125 in x 6 ft | 3.175 mm x 1828.8 mm |
| PCTFE Rod 0.156 in x 6 ft | 3.962 mm x 1828.8 mm |
| PCTFE Rod 0.187 in x 6 ft | 4.750 mm x 1828.8 mm |
| PCTFE Rod 0.375 in x 6 ft | 9.525 mm x 1828.8 mm |
| PCTFE Rod 0.437 in x 6 ft | 9.525 mm x 1828.8 mm |
| PCTFE Rod 0.5 in x 6 ft | 11.100 mm x 1828.8 mm |
| PCTFE Rod 0.562 in x 6 ft | 14.275 mm x 1828.8 mm |
| PCTFE Rod 0.625 in x 6 ft | 15.875 mm x 1828.8 mm |
| PCTFE Rod 0.687 in x 6 ft | 17.450 mm x 1828.8 mm |
| PCTFE Rod 0.75 in x 6 ft | 19.050 mm x 1828.8 mm |
| PCTFE Rod 0.875 in x 6 ft | 22.225 mm x 1828.8 mm |
| PCTFE Rod 1 in x 6 ft | 25.400 mm x 1828.8 mm |
| PCTFE Rod 1.125 in x 6 ft | 28.575 mm x 1828.8 mm |
| PCTFE Rod 1.25 in x 6 ft | 31.750 mm x 1828.8 mm |
| PCTFE Rod 1.375 in x 6 ft | 34.925 mm x 1828.8 mm |
| PCTFE Rod 1.5 in x 6 ft | 38.100 mm x 1828.8 mm |
| PCTFE Rod 1.625 in x 6 ft | 41.275 mm x 1828.8 mm |
| PCTFE Rod 1.75 in x 6 ft | 44.450 mm x 1828.8 mm |
| PCTFE Rod 1.875 in x 6 ft | 47.625 mm x 1828.8 mm |
| PCTFE Rod 2 in x 6 ft | 50.800 mm x 1828.8 mm |
| PCTFE Rod 2.25 in x 1 ft | 57.150 mm x 304.8 mm |
| PCTFE Rod 2.75 in x 1 ft | 69.850 mm x 304.8 mm |
Applications & Industries of PCTFE Rod
You can use PCTFE rod when your system needs low gas permeability, stable performance under cryogenic temperatures, or reliable insulation in high-vacuum environments. Peflon provides polychlorotrifluoroethylene rods that support precision sealing, valve construction, semiconductor fixtures, gas-handling units, and custom CNC parts. Whether you work in industrial gas, vacuum equipment, or advanced chemical systems, our PCTFE rods help you build safe, durable components with consistent long-term performance. Contact us if you need application guidance or custom diameters.
Cryogenic Systems & LNG Equipment
PCTFE rod is widely used in cryogenic pumps, LNG valves, O-rings, and seal seats exposed to extremely low temperatures. It maintains stiffness and accuracy when other plastics soften or deform.
High-Vacuum Chambers & Semiconductor Tools
In vacuum equipment and semiconductor systems, the low outgassing and low permeability of PCTFE rod help maintain clean chambers, stable pressure, and reliable long-term insulation.
Gas-Handling & Pressure-Control Units
PCTFE rod is ideal for pressure regulators, gas sampling valves, flow controllers, and fittings that require low gas transmission and stable mechanical behavior.
Chemical Processing & High-Purity Fluids
In chemical plants and laboratory instruments, PCTFE rod provides strong resistance to acids, oxidizers, and high-purity media without swelling or cracking.
CNC-Machined Components & Custom Parts
Because of its stiffness and clean chip formation, PCTFE rod is commonly used to produce precision rings, spacers, insulating parts, and structural components with tight tolerances.
Nuclear, Energy & Radiation-Exposed Systems
PCTFE rod offers strong radiation resistance and flame resistance, making it suitable for certain nuclear and energy applications where stability and safety are critical.
Why Choose Peflon PCTFE Rod
When you source PCTFE rod, you need reliable resin input, stable production, and complete compliance files. Peflon gives you consistent polychlorotrifluoroethylene rods made with traceable Neoflon grades, controlled processing, and strict quality checks. You get predictable machining behavior, steady batches, and on-time delivery for sealing projects, vacuum assemblies, and cryogenic valves. Our team supports you with custom diameters, fast sampling, and application guidance for OEM and industrial use.
Contact us for trial grades and volume planning.
Stable Resin Supply for Long-Term Projects
Choosing a reliable PCTFE rod supplier is critical when you manage long-term OEM projects or recurring sealing parts. Peflon supports your planning with stable resin sourcing, clear lead times, and predictable month-to-month output. This helps you avoid delays, last-minute sourcing, and inconsistent batches.
- Secured sourcing of Neoflon PCTFE resin
- Monthly capacity planning for recurring orders
- Fixed lead-time windows for OEM clients
- Multi-batch stability tracking for long projects
Full QC on Every Rod Diameter
For CNC shops and engineering teams, PCTFE rod machining must be predictable. Peflon controls rod diameter, straightness, and surface quality so your tools cut cleanly and your parts stay within tolerance. You save time on rework and avoid waste from off-spec material.
- Diameter and ovality checks on every batch
- Surface finish control for clean chip formation
- Straightness inspection for long rods
- Optional custom tolerances for tight-fit parts
Peflon kel f pctfe by length
We offer customized PCTFE Rods to meet diverse client requirements by employing either direct extrusion or compression molding techniques to produce designed dimensions and configurations.
5–150 mm PCTFE Rods
It has standard diameters:5mm, 10mm, 20mm, 30mm, 50mm, 80mm, 100mm, 120mm, 150mm.
>150 mm PCTFE Rods
With standard large diameters:150mm, 200mm, 250mm, 300mm, up to 500mm+ (custom orders).
Custom length PCTFE Rods
Vailable in rod form with natural and custom sizes upon requests
pctfe plastic Material parts by Processing
PCTFE is a chlorofluoropolymer with the chemical structure-(CF&sub2;-CFCl)ₙ-. Compared to PTFE, its molecular chain contains chlorine atoms replacing some fluorine atoms, based on the chlorotrifluoroethylene monomer.
Extruded Rods Pure PCTFE Rods
Extruded Rods Continuous production, uniform density; standard diameters
Compression-Molded kel f
Compression-Molded Higher mechanical strength; used for large diameters.
Machined PCTFE Parts
Machined from Blocks Custom shapes cut from PCTFE billets; precision tolerances.A
Technical Support for PCTFE Rod
You may need more than material data when choosing a PCTFE rod for cryogenic valves, vacuum systems, or CNC parts. Many engineers struggle to compare grades, select the right diameter, or control machining tolerances. Our technical articles walk you through resin behavior, design notes, machining guides, and application tips. You get clear guidance to help your team reduce mistakes and improve part performance.
Visit our technical blog for more resources and expert support.
Frequently Asked Questions of PCTFE
What is the difference between PCTFE rod and PTFE rod?
PCTFE rod is stiffer and has lower creep than PTFE, which helps you keep tight tolerances in machined parts. It also offers lower gas permeability and better stability at cryogenic temperatures. PTFE has a higher upper-temperature limit, but the PCTFE rod performs better for vacuum systems, valve seats, and gas-barrier components.
What is the temperature range of PCTFE rod?
Most PCTFE rods operate from –240°C to +150°C, making them suitable for cryogenic valves, LNG equipment, and high-vacuum assemblies. The material keeps its strength and rigidity even at extremely low temperatures.
Is PCTFE rod easy to machine?
Yes. PCTFE rod machining is predictable because the material is rigid, produces clean chips, and holds its shape well. CNC shops use PCTFE bar stock for spacers, seats, rings, and precision sealing components. Custom tolerances are available if you need tight-fit parts.
Is PCTFE rod suitable for high-vacuum or gas-barrier applications?
Yes. PCTFE rod has very low gas permeability and low outgassing, which makes it ideal for vacuum chambers, pressure-control units, and semiconductor tools. It maintains stable dimensions under vacuum load and helps protect system purity.
Does PCTFE rod meet compliance requirements such as REACH or FDA?
Most industrial-grade PCTFE rods can meet REACH, RoHS, and certain FDA 21 CFR requirements depending on the resin grade. Peflon provides compliance files and batch traceability so you can pass audits for OEM and regulated markets.
Related Products of PCTFE Rod
If you use PCTFE rod for cryogenic valves or vacuum assemblies, you may also need other fluoropolymer materials to complete your sealing system. Many buyers struggle with matching parts across different plastics, especially when balancing rigidity, chemical resistance, and machining performance. To support your full project, we also supply PTFE, PFA, FEP, and PCTFE sheets or tubes for precision components and high-purity fluid systems.
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Contact Us for PCTFE Rod
If you are ready to source PCTFE rod for valves, vacuum parts, or custom CNC components, our team is here to help. Tell us your required diameter, tolerance, and application, and we will prepare samples, datasheets, and a clear quotation. You get fast responses and support for both small trials and long-term supply.