Product Specification

PCTFE Rod

PCTFE rod is a high-performance fluoropolymer round bar designed for precision-machined components requiring low gas permeability, dimensional stability, chemical resistance and reliable performance at low temperatures.

PCTFE, or polychlorotrifluoroethylene, has a dense molecular structure that provides lower moisture absorption and lower gas transmission than many conventional fluoropolymer materials. It is often selected for valve seats, sealing components, cryogenic equipment parts and precision components used in gas-control and fluid-handling systems.

Our PCTFE rods are available in diameters from 4 mm to 50 mm, with a standard length of 1000 mm. Custom diameters, cut lengths, dimensional tolerances and CNC-machined components can be produced according to drawings or application requirements.

Key Features

• Low gas and moisture permeability
• Good dimensional stability
• Excellent resistance to many chemicals
• Suitable for low-temperature applications
• Good electrical-insulation properties
• Low moisture absorption
• Smooth machinable surface
• Suitable for precision CNC machining
• Standard diameters from 4 mm to 50 mm
• Custom cutting and finished components available

Standard Specifications

Available Size Range

• Diameter: Ø4–50 mm
• Standard length: 1000 mm
• Custom length: Available
• Custom diameter: Subject to quantity and production evaluation
• Cut-to-length service: Available
• CNC machining: Available according to drawings

Material Advantages

Low Gas Permeability

PCTFE has a dense polymer structure and is widely selected for components that need to reduce gas transmission.

This makes it suitable for:

• Gas-control valves
• Cryogenic sealing systems
• Laboratory gas equipment
• Aerospace components
• High-integrity fluid systems

Low Moisture Absorption

PCTFE absorbs very little moisture, helping components maintain dimensional consistency in humid or demanding environments.

Dimensional Stability

Compared with softer fluoropolymers, PCTFE provides better rigidity and dimensional stability, making it suitable for tightly toleranced precision parts.

Chemical Resistance

PCTFE offers resistance to many corrosive chemicals, oils, gases and process fluids.

Final compatibility should be confirmed according to:

• Exact chemical or gas
• Concentration
• Operating temperature
• Pressure
• Exposure time
• Mechanical load

Low-Temperature Performance

PCTFE is commonly selected for sealing and valve components used in low-temperature and cryogenic systems.

The final allowable service temperature depends on the specific grade, component geometry, load, pressure and operating conditions.

Typical Applications

PCTFE rod can be machined into:

• Valve seats
• Cryogenic seals
• Sealing rings
• Bushings and sleeves
• Compressor components
• Gas-control components
• Pump components
• Electrical-insulation parts
• Precision spacers
• Laboratory instrument components
• Aerospace components
• High-pressure gas-system parts

Application Industries

• Cryogenic equipment
• Aerospace and aviation
• Gas-control systems
• Chemical processing
• Laboratory instruments
• Pharmaceutical equipment
• Semiconductor equipment
• Pump and valve manufacturing
• Industrial sealing systems
• Precision machinery
• Electrical and electronic equipment

PCTFE Rod vs. PTFE Rod

PCTFE is often selected when gas permeability, dimensional stability and precision sealing are more important than achieving the lowest possible friction.