Materials Overview / PFA Properties

PFA (Perfluoroalkoxy Alkane) tubing is a high-performance fluoropolymer solution used in demanding industrial and laboratory applications. It combines excellent chemical resistance, broad temperature tolerance, mechanical flexibility, and high purity, making it ideal for fluid transfer in chemical processing, semiconductor, pharmaceutical, and analytical systems.

 

 

PFA tubing resists a wide range of aggressive chemicals, including strong acids, bases, and most organic solvents. It is fully fluorinated, which ensures inertness and long-term stability in harsh chemical environments. Unlike PTFE, PFA is melt-processable, allowing precise tubing dimensions and smoother internal surfaces for critical fluid handling.

 

Key Features:

• Resistant to oxidizing agents and aggressive acids
• Minimal swelling or degradation over long-term chemical exposure
• Compatible with ultra-pure and high-purity fluids
• Suitable for cleanroom and pharmaceutical-grade applications

 

 

 

PFA tubing operates reliably over a wide temperature range. It can withstand cryogenic temperatures as low as -200°C and continuous high temperatures up to 260°C. Occasional short-term peaks may reach 280°C without compromising mechanical or chemical integrity. Thermal expansion is higher than PTFE, so design adjustments may be necessary in temperature-varying systems.

 

Key Thermal Highlights:

• Continuous use temperature: -200°C to 260°C
• Maximum short-term temperature: 280°C
• Excellent dimensional stability under thermal cycling
• Transparent options allow visual inspection of fluid flow

 

 

PFA tubing offers flexibility and toughness, allowing it to bend and conform without cracking. Its low friction surface promotes smooth fluid flow and reduces particle adhesion, which is critical in high-purity applications. Compared with PTFE, PFA has improved toughness and resistance to stress cracking.

 

Mechanical Highlights:

• High flexibility with good tensile strength
• Low coefficient of friction for smooth fluid transport
• Resistant to cracking under bending or repeated stress
• Non-stick and easy to clean, ideal for analytical systems

 

 

 

PFA tubing maintains excellent dielectric properties, suitable for applications requiring insulation or non-conductive tubing. It has low dielectric loss and high insulation resistance across broad frequencies and temperatures.

 

• Dielectric strength: 50–100 kV/mm
• Dielectric constant: 2.1–2.2
• Dissipation factor: 0.0003–0.0005

 

 

PFA tubing is melt-processable, allowing precise extrusion with tight dimensional tolerances. It can be produced in a wide range of outer diameters, wall thicknesses, and lengths, with smooth inner surfaces to minimize particle contamination. Custom colors and markings are available for system identification. PFA can also be used to manufacture spiral, coiled, or reinforced tubing for specific industrial setups.

 

Key Fabrication Advantages:

• Precise OD/ID dimensions
• Smooth internal surfaces for low particle adhesion
• Flexible for bending, coiling, and routing in complex systems
• Compatible with custom lengths and OEM requirements

 

 

PFA tubing is commonly applied in high-purity and corrosive fluid systems where reliability and chemical inertness are critical:

 

• Chemical Processing: Transfer of acids, bases, and solvents
• Pharmaceutical & Biotech: High-purity fluid lines and cleanroom applications
• Semiconductor Industry: Ultra-pure chemical delivery systems
• Laboratory Equipment: Analytical instruments, liquid chromatography, and sampling
• Industrial Systems: Corrosion-resistant tubing for pumps, reactors, and flow systems

 

Advantages in Applications:

• Maintains purity and prevents contamination
• Withstands repeated thermal cycles
• Flexible routing in complex fluid systems
• Resistant to stress cracking under repeated bending