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Teflon Heat Shrink Tube
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High flame retardancy PFA Heat Shrink Tube factory 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、t 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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