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High Flame Retardancy PFA Heat Shrink Tube from China Suppliers | Premium Factory Quality
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
-
1
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. -
2
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. -
3
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 order are available by customization.
This item can reach flame retardancy level of V0.
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Frequently Asked Questions
Q1
What is the maximum operating temperature of this PTFE heat shrink tubing?
This tubing supports continuous use from -200°C to 260°C. It can also withstand short-term instantaneous exposure up to 300°C without cracking or deformation, making it suitable for extreme thermal environments including aerospace and industrial applications.
Q2
Is this tubing suitable for use in semiconductor or medical environments?
Yes. The tubing is available in transparent, low-precipitation types (e.g., DuPont 451HP) suitable for high-clean semiconductor environments. It also holds biocompatible certifications, making it appropriate for medical catheters, sensors, and sterile equipment insulation.
Q3
What chemicals is this PTFE tubing resistant to?
The tubing offers superior chemical resistance to strong acids (hydrofluoric acid, nitric acid), alkalis (sodium hydroxide), organic solvents (acetone, xylene), and oils. It only reacts with elemental fluorine and molten alkali metals such as sodium and potassium at high temperatures.
Q4
What shrink ratio and heat gun temperature are recommended for installation?
The shrink ratio ranges from 3:1 to 5:1 depending on the model. During installation, use a heat gun set at 200–230°C and apply uniform heating across the tubing. Avoid local overheating to prevent melting or deformation, and ensure no bubbles or wrinkles remain after shrinkage.
Q5
Does this product meet international safety and environmental standards?
Yes. The tubing meets UL94 V-0 flame retardancy standard with an oxygen index greater than 95%, meaning it is non-combustible in air. It is also ROHS compliant and UV-resistant, making it safe for use in medical devices, aerospace wiring, and other safety-critical applications.
Q6
Are custom sizes and colors available for this tubing?
Yes. All special sizes and colors are available by customization. Standard inner diameters range from 3.0mm to 14.0mm as shown in the specification sheet. Please contact us with your specific requirements and we will provide an accurate quote.