+86-17688612661 
Hot Products
High Flame Retardancy PFA Heat Shrink Tube - Top Quality Factory and Suppliers in China
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 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.
Make a Free Consultant
Frequently Asked Questions
-
What is the operating temperature range of this PTFE heat shrink tubing?This tubing supports continuous use from -200°C to 260°C, with short-term tolerance up to 300°C. It also maintains flexibility at -80°C without becoming brittle, making it suitable for extreme temperature environments.
-
What chemicals is this tubing resistant to?The tubing is resistant to strong acids (including hydrofluoric and nitric acid), alkalis (such as sodium hydroxide), organic solvents (acetone, xylene), and various oils. It only reacts with elemental fluorine and molten alkali metals at high temperatures.
-
What shrink ratio options are available?Depending on the model, the shrink ratio ranges from 3:1 to 5:1. The tubing tightly conforms to the substrate after shrinkage for reliable protection. For frequent bending applications, the thin-walled model with a 3:1 ratio is recommended.
-
How should I apply heat to shrink this tubing correctly?Use a heat gun set to 200–230°C and apply heat evenly along the tubing. Avoid concentrating heat in one area to prevent melting or deformation. After shrinkage, inspect to ensure there are no bubbles or wrinkles on the surface.
-
Is this product suitable for medical and semiconductor applications?Yes. The tubing offers biocompatible certification for medical catheters and sterile equipment. For semiconductor use, transparent low-precipitation types (e.g., DuPont 451HP) are recommended for high-clean environments and corrosion-resistant sealing.
-
Can custom sizes and colors be ordered?Yes. All special sizes and colors are available by customization. Please use the inquiry form above to submit your specific requirements, and our team will provide an accurate quote promptly.