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High Flame Retardancy PFA Heat Shrink Tube - Factory & Suppliers in China
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
Important Notes
All special sizes and colors orders are available by customization.This item can reach flame retardancy level of V0.
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Frequently Asked Questions (FAQ)
1What is the maximum operating temperature of this PTFE heat shrink tubing?
This PTFE heat shrink tubing supports continuous use from -200°C to 260°C. It can also withstand short-term instantaneous temperatures up to 300°C. The high thermal deformation temperature prevents cracking after shrinkage, making it suitable for extreme thermal environments.
2What chemicals is this tubing resistant to?
The tubing is highly resistant to strong acids (including hydrofluoric acid and nitric acid), alkalis (such as sodium hydroxide), organic solvents (e.g., acetone and xylene), and oils. It only reacts with elemental fluorine and molten alkali metals (e.g., sodium and potassium) at high temperatures.
3What shrink ratio does this product offer and how should I apply heat?
The shrink ratio is 3:1 to 5:1 depending on the model. To apply, use a heat gun set at 200–230°C and heat evenly around the tubing. Avoid concentrated heat on one spot to prevent melting or deformation. After shrinkage, ensure there are no bubbles or wrinkles on the surface.
4Is this tubing suitable for medical and food processing applications?
Yes. The tubing features a low friction coefficient (0.2–0.3) and hydrophobic non-stick surface, making it ideal for medical catheters, sensors, and sterile equipment. It also complies with biocompatibility standards and ROHS regulations, making it suitable for both medical devices and food processing equipment.
5Does this product meet flame retardancy standards?
Yes. This tubing meets the UL94 V-0 flame retardancy standard with an oxygen index greater than 95%, meaning it is non-combustible in air. It is also suitable for aerospace wiring and medical devices where strict fire safety requirements must be met.
6Can custom sizes and colors be ordered?
Yes, all special sizes and custom colors are available upon request. Please fill out the inquiry form above with your specific requirements — including inner diameter, wall thickness, length, and color — and our team will provide an accurate quote promptly.