Materials Overview / PVDF Properties

PVDF (Polyvinylidene Fluoride) tubing is a high-performance fluoropolymer solution combining excellent chemical resistance, mechanical strength, thermal stability, and dimensional integrity. PVDF is widely used in applications requiring durability, high purity, and resistance to aggressive chemicals, making it ideal for chemical processing, semiconductor, pharmaceutical, and analytical systems.

 

 

PVDF tubing resists a broad range of chemicals, including strong acids, bases, and halogenated solvents. While it is not as chemically inert as PFA or PTFE, PVDF offers a balance of chemical resistance and mechanical strength, which makes it suitable for long-term fluid transport under moderate chemical exposure.

 

Key Chemical Features:

• Resistant to most acids, bases, and halogenated solvents
• Limited resistance to strong oxidizers at elevated temperatures
• Maintains integrity in high-purity and cleanroom applications
• Minimal leaching, suitable for pharmaceutical and semiconductor fluid systems

 

 

 

PVDF tubing exhibits good thermal stability, suitable for high-temperature applications up to 150°C continuously. Short-term exposure can reach 170°C without degradation. PVDF retains mechanical integrity under thermal cycling, making it reliable for industrial fluid systems.

 

Key Thermal Highlights:

• Continuous use temperature: -40°C to 150°C
• Maximum short-term temperature: 170°C
• Good dimensional stability under thermal cycling
• Can handle moderate heat sterilization processes

 

 

PVDF tubing is stronger and stiffer than PTFE or PFA, with good tensile strength and impact resistance. Its rigidity makes it suitable for applications where tubing needs to maintain shape under pressure or mechanical stress. PVDF is less flexible than PFA but can be coiled or bent with appropriate radius.

 

Mechanical Highlights:

• High tensile strength and stiffness
• Resistant to impact and abrasion
• Smooth internal surface reduces particle adhesion
• Low creep under continuous load

 

 

 

PVDF tubing has good dielectric properties, although not as high as PTFE. It provides sufficient insulation for most industrial and laboratory applications where non-conductive tubing is required.

 

• Dielectric strength: 30–50 kV/mm
• Dielectric constant: 7–8
• Dissipation factor: 0.02–0.03

 

 

PVDF tubing is melt-processable, allowing precise extrusion with tight dimensional tolerances. It is available in a wide range of outer diameters and wall thicknesses. The tubing is rigid enough to maintain shape while still allowing bends for routing. Custom lengths, coiled or reinforced tubing, and color-coded options are available.

 

Key Fabrication Advantages:

• High dimensional accuracy
• Smooth internal surfaces for low particle adhesion
• Maintains shape under mechanical stress
• Customization for OEM and industrial applications

 

 

PVDF tubing is suitable for systems requiring a combination of chemical resistance, mechanical strength, and dimensional stability:

• Chemical Processing: Transport of acids, alkalis, and solvents under pressure
• Pharmaceutical & Biotech: High-purity lines with mechanical integrity
• Semiconductor Industry: Chemical delivery systems with structural support
• Laboratory Applications: Analytical instruments, pumps, and flow systems
• Industrial Fluid Systems: Corrosion-resistant, pressure-tolerant tubing

 

Advantages in Applications:

• Maintains tubing shape under mechanical and thermal stress
• Resistant to chemical attack in moderate to aggressive environments
• Smooth inner surfaces for contamination-free fluid transfer
• Can be routed and supported in complex piping layouts