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High Flame Retardancy PFA Heat Shrink Tube from China - Leading Suppliers and Factory
Product Features
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Ultra-Wide Temperature Range
• Continuous use: -200°C to 260°C
• Short-term exposure to 300°C instantaneous temperatures possible. High thermal deformation temperature prevents cracking after shrinkage.
• Maintains flexibility at -80°C, avoiding brittleness. -
Superior Chemical Stability
• Resistant to strong acids (e.g., hydrofluoric acid, nitric acid), alkalis (e.g., sodium hydroxide), organic solvents (e.g., acetone, xylene), and oils.
• Reacts only with elemental fluorine and molten alkali metals (e.g., sodium, potassium) at high temperatures. -
Excellent Electrical Insulation
• Stable dielectric constant (2.1), consistent across 60Hz–60MHz frequency range.
• Volume resistivity >10¹⁸Ω·m, surface resistance >10¹³Ω, arc resistance >165 seconds. No conductive channels after damage. -
Low Friction & Non-Stick Properties
• Dynamic friction coefficient 0.2–0.3, hydrophobic surface (contact angle 114°), preventing media adhesion.
• Ideal for food processing equipment and medical catheters requiring contamination prevention. -
High Transparency & Cleanliness
• Transparent material allows clear inspection of internal components.
• Low refractive index ensures outstanding transparency among plastics. -
Flame Retardancy & Safety
• Meets UL94 V-0 standard, oxygen index >95%, non-combustible in air.
• Suitable for medical devices and aerospace wiring with strict safety requirements. -
Mechanical Strength & Wear Resistance
• High tensile strength, abrasion-resistant, and anti-cutting.
• Shrink ratio 3:1 to 5:1 (model-dependent), tightly conforms to substrates after shrinkage. -
Environmental Durability
• ROHS compliant, UV-resistant, maintains structural integrity in harsh environments.
• Lifespan 5–8 years under normal conditions; slow performance degradation in extreme environments.
Application
Product Application
◎ Semiconductor Manufacturing: Corrosion-resistant sealing for wafer transfer systems and etching equipment pipeline.
◎ Medical Devices: Biocompatible certified products for catheters, sensors, and sterile equipment insulation.
◎ Chemical Anti-Corrosion: Sealing for chemical pipeline interfaces and reactor linings.
Product Application
◎ Aerospace: High-temperature protection for aviation wiring and satellite harness sealing.
◎ Renewable Energy: Protection for lithium battery modules.
Usage Instructions
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Selection Guide
• High-clean environments (e.g., semiconductor) → Choose DuPont 451HP, transparent, low precipitation types.
• High-voltage insulation → Select wall thickness ≥1.0mm, Pressure resistant ≥600V, UL224 certified.
• Frequent bending → Select the thin-walled model with a contraction ratio of 3:1 and excellent flexibility. -
Shrinkage Process
• Use heat gun at 200–230°C for uniform heating.
• Avoid local overheating to prevent melting or deformation.
• Ensure no bubbles or wrinkles after shrinkage. -
Precautions
• Avoid contact with elemental fluorine and molten alkali metals at high temperatures.
• Store away from heat sources and strong oxidizers, keep dry and ventilated.
Product Specification Sheet
| Inner Diameter Before Contraction (MM) | Wall Thickness Before Contraction (MM) | Inner Diameter After Contraction (MM) | Wall Thickness After Contraction (MM) |
| 3.0±0.2 | 0.15±0.03 | 2.3 | 0.20±0.03 |
| 3.5±0.2 | 0.15±0.03 | 2.7 | 0.20±0.03 |
| 4.0±0.2 | 0.15±0.03 | 3.1 | 0.20±0.03 |
| 4.5±0.2 | 0.15±0.03 | 3.4 | 0.20±0.03 |
| 5.0±0.2 | 0.15±0.03 | 3.8 | 0.20±0.03 |
| 6.0±0.3 | 0.15±0.03 | 4.6 | 0.20±0.03 |
| 7.0±0.3 | 0.15±0.03 | 5.4 | 0.20±0.03 |
| 8.0±0.3 | 0.15±0.03 | 6.2 | 0.20±0.03 |
| 9.0±0.3 | 0.15±0.03 | 6.9 | 0.20±0.03 |
| 10.0±0.3 | 0.15±0.03 | 7.7 | 0.20±0.03 |
| 11.0±0.3 | 0.2±0.05 | 8.5 | 0.25±0.05 |
| 14.0±0.3 | 0.2±0.05 | 10.8 | 0.25±0.05 |
Note
📌All special sizes and colors orders are available by customization.
📌This item can reach flame retardancy level of V0.
📌This item can reach flame retardancy level of V0.
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Frequently Asked Questions
What temperature range can this PTFE heat shrink tubing withstand?
This tubing supports continuous use from -200°C to 260°C, with short-term exposure up to 300°C. It also maintains flexibility at -80°C without becoming brittle, making it suitable for both extreme cold and high-heat environments.
Is this heat shrink tubing chemically resistant?
Yes. It is resistant to strong acids (including hydrofluoric acid and nitric acid), alkalis (such as sodium hydroxide), organic solvents (acetone, xylene), and oils. It only reacts with elemental fluorine and molten alkali metals at high temperatures.
What is the shrink ratio of this product?
The shrink ratio ranges from 3:1 to 5:1 depending on the model. After shrinkage, the tubing tightly conforms to the substrate without bubbles or wrinkles.
How should I apply heat to shrink the tubing correctly?
Use a heat gun set to 200–230°C and apply heat evenly along the tubing. Avoid concentrating heat in one spot, as this may cause melting or deformation. Ensure a smooth, bubble-free finish after shrinkage.
Does this tubing meet flame retardancy and safety standards?
Yes. It meets the UL94 V-0 flame retardancy standard with an oxygen index greater than 95%, meaning it is non-combustible in air. It is suitable for medical devices, aerospace wiring, and other applications with strict safety requirements.
Can custom sizes and colors be ordered?
Yes. All special sizes and colors are available by customization. Please contact us with your specific requirements and we will provide an accurate quote.