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High Flame Retardancy PFA Heat Shrink Tube from China Suppliers - Quality Factory Product for Extreme Environments
Product Features
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
-
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 Before 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 order are available by customization.
This item can reach flame retardancy level of V0.
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Frequently Asked Questions
Q
What is the operating temperature range of this PTFE heat shrink tubing?
This PTFE heat shrink tubing supports continuous use from -200°C to 260°C. It can withstand short-term instantaneous temperatures up to 300°C. It also maintains full flexibility at -80°C without becoming brittle, making it suitable for extreme thermal environments.
Q
What chemicals is PTFE heat shrink tubing resistant to?
The tubing is highly resistant to strong acids (including hydrofluoric acid and nitric acid), alkalis (such as sodium hydroxide), organic solvents (such as acetone and xylene), and oils. It only reacts with elemental fluorine and molten alkali metals such as sodium and potassium at high temperatures.
Q
What industries or applications is this product suitable for?
This product is widely used across semiconductor manufacturing (corrosion-resistant sealing for wafer transfer and etching systems), medical devices (biocompatible catheters, sensors, sterile equipment insulation), chemical anti-corrosion (pipeline and reactor lining sealing), aerospace (aviation wiring and satellite harness protection), and renewable energy (lithium battery module protection).
Q
How do I properly shrink the PTFE heat shrink tubing?
Use a heat gun set to 200–230°C and apply heat uniformly along the tubing. Avoid concentrating heat on a single spot to prevent melting or deformation. After shrinkage is complete, inspect the tubing to ensure there are no bubbles or wrinkles on the surface.
Q
Does this product meet flame retardancy and safety standards?
Yes. This PTFE heat shrink tubing meets the UL94 V-0 flame retardancy standard with an oxygen index greater than 95%, making it non-combustible in air. It is suitable for use in medical devices and aerospace wiring where strict fire safety requirements apply. Custom orders can also reach a flame retardancy level of V0.
Q
Are custom sizes and colors available for this product?
Yes. All special sizes and colors are available through customization. Standard sizes range from an inner diameter of 3.0 mm to 14.0 mm with specified wall thicknesses. Please contact us via the inquiry form above to discuss your specific requirements and receive an accurate quote.