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High-End PTFE Heat Shrink Tubing from China Suppliers | Advanced Factory Technology for Extreme Environments
Product Features
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Broad Temperature Range
Continuous use from -80°C to 260°C; short-term exposure to higher temperatures possible. Shrinkage requires >300°C for tight encapsulation.
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Chemical Stability
Resistant to strong acids, alkalis, organic solvents, and oils; only elemental fluorine and molten alkali metals may affect it at high temperatures.
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Electrical Insulation
Stable dielectric constant (2.1), surface resistance >10¹³Ω, volume resistance >10¹⁸Ω·m, ensuring reliable high-frequency signal transmission.
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Low Friction & Non-Stick
Dynamic friction coefficient 0.2–0.3, hydrophobic surface (contact angle 114°), preventing media adhesion.
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Flame Retardancy & Safety
Meets UL94 V-0 standard, oxygen index >95%, non-combustible in air.
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Mechanical Performance
Shrink ratio 1.7:1 or 4:1 (model-dependent), tightly conforms to substrates after shrinkage, providing stress relief and sealing.
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Environmental Durability
ROHS compliant; lifespan 5–8 years in normal conditions, maintains integrity in harsh environments.
Application
Product Application
◎ Electronics: Insulation for high-frequency circuits, solder joint protection, cable labeling.
◎ Industrial: Chemical pipeline anti-corrosion, anti-wear for mechanical transmission parts.
Product Application
◎ Medical: Biocompatible certified products for sterile equipment.
◎ Aerospace: High-temperature protection for aviation wiring.
Characteristics
| Project | Test Procedure | Parameter |
| Proportion (g/cm³) | ASTM D792 | 2.16 |
| Tensile Strength (MPa) | ASTM D638 | 24.5 |
| Ultimate Elongation (%) | ASTM D638 | 350 |
| Bending Coefficient (MPa) | ASTM D790 | 490 |
| Impact Strength | ASTM D256 +23℃–54℃ J/m | 107 |
| Hardness (A) | ASTM D2240 | 75 |
| Friction Coefficient | -- | 0.1 |
| Melting Degree (℃) | -- | 327 |
| Actual Operating Temperature Range (℃) | -- | 260 |
| Fire Retardant Grade | UL-224 | VW-1 |
| Dielectric Constant (10³–10⁶ Hz) | ASTM D150 | 2.1 |
| Dissipation Factor (10⁶ Hz) | ASTM D150 | 0.0002 |
| Arc Coefficient (S) | ASTM D495 | >300 |
| Volume Resistivity (Ω·cm) | ASTM D257 | >10¹⁸ |
| Weather Resistant | (2000h) | No crack |
| Solvent Resistant | ASTM D543 | Excellent |
| Chemical Resistant | ASTM D543 | Excellent |
| Breakdown Strength | ASTM D543 | 25 KV/MM |
Product Specification Sheet
Shrinkage Ratio 1.7:1
| Specification | Inner Diameter (mm) | Wall Thickness (mm) Ordinary Type | Wall Thickness (mm) Thicker Type | Packing | Tube Type | |||
| Before Contraction | After Contraction | Before Contraction | After Contraction | Before Contraction | After Contraction | |||
| Ф0.5 | 0.7±0.2 | ≤0.35 | 0.10±0.05 | 0.15±0.05 | 0.12±0.05 | 0.18±0.05 | 200M | Round Tube |
| Ф0.6 | 0.8±0.2 | ≤0.35 | 0.10±0.05 | 0.15±0.05 | 0.12±0.05 | 0.18±0.05 | 200M | Round Tube |
| Ф0.8 | 1.0±0.2 | ≤0.47 | 0.10±0.05 | 0.15±0.05 | 0.12±0.05 | 0.18±0.05 | 200M | Round Tube |
| Ф1.0 | 1.2±0.2 | ≤0.6 | 0.10±0.05 | 0.15±0.05 | 0.12±0.05 | 0.18±0.05 | 200M | Round Tube |
| Ф1.5 | 1.7±0.2 | ≤0.9 | 0.10±0.05 | 0.15±0.05 | 0.19±0.05 | 0.3±0.05 | 200M | Round Tube |
| Ф2.0 | 2.2±0.2 | ≤1.25 | 0.10±0.05 | 0.15±0.05 | 0.19±0.05 | 0.3±0.05 | 200M | Round Tube |
| Ф2.5 | 2.7±0.2 | ≤1.55 | 0.10±0.05 | 0.15±0.05 | 0.19±0.05 | 0.3±0.05 | 200M | Round Tube |
| Ф3.0 | 3.2±0.2 | ≤1.75 | 0.15±0.05 | 0.2±0.05 | 0.19±0.05 | 0.3±0.05 | 200M | Round Tube |
| Ф3.5 | 3.7±0.2 | ≤2.06 | 0.15±0.05 | 0.2±0.05 | 0.19±0.05 | 0.3±0.05 | 200M | Round Tube |
| Ф4.0 | 4.3±0.3 | ≤2.5 | 0.15±0.05 | 0.2±0.05 | 0.19±0.05 | 0.3±0.05 | 200M | Round Tube |
| Ф4.5 | 4.8±0.3 | ≤2.75 | 0.15±0.05 | 0.2±0.05 | 0.19±0.05 | 0.3±0.05 | 200M | Round Tube |
| Ф5.0 | 5.3±0.3 | ≤3.05 | 0.15±0.05 | 0.2±0.05 | 0.19±0.05 | 0.3±0.05 | 200M | Round Tube |
| Ф5.5 | 5.8±0.3 | ≤3.23 | 0.15±0.05 | 0.2±0.05 | 0.22±0.05 | 0.36±0.05 | 100M | Round Tube |
| Ф6.0 | 6.3±0.3 | ≤3.70 | 0.15±0.05 | 0.2±0.05 | 0.22±0.05 | 0.36±0.05 | 100M | Round Tube |
| Ф6.5 | 6.8±0.3 | ≤3.82 | 0.15±0.05 | 0.2±0.05 | 0.22±0.05 | 0.36±0.05 | 100M | Round Tube |
| Ф7.0 | 7.3±0.3 | ≤4.1 | 0.15±0.05 | 0.2±0.05 | 0.22±0.05 | 0.36±0.05 | 100M | Flat Tube |
| Ф7.5 | 7.8±0.3 | ≤4.4 | 0.15±0.05 | 0.23±0.05 | 0.22±0.05 | 0.36±0.05 | 100M | Flat Tube |
| Ф8.0 | 8.3±0.3 | ≤4.8 | 0.15±0.05 | 0.23±0.05 | 0.22±0.05 | 0.36±0.05 | 100M | Flat Tube |
| Ф9.0 | 9.3±0.3 | ≤5.3 | 0.15±0.05 | 0.23±0.05 | 0.22±0.05 | 0.36±0.05 | 100M | Flat Tube |
| Ф10.0 | 10.5±0.5 | ≤5.88 | 0.15±0.05 | 0.23±0.05 | 0.22±0.05 | 0.36±0.05 | 100M | Flat Tube |
| Ф11.0 | 11.5±0.5 | ≤6.8 | 0.15±0.05 | 0.23±0.05 | 0.22±0.05 | 0.36±0.05 | 100M | Flat Tube |
| Ф12.0 | 12.5±0.5 | ≤7.2 | 0.15±0.05 | 0.23±0.05 | 0.22±0.05 | 0.36±0.05 | 100M | Flat Tube |
| Ф14.0 | 14.5±0.5 | ≤8.3 | 0.15±0.05 | 0.27±0.05 | 0.22±0.05 | 0.36±0.05 | 100M | Flat Tube |
| Ф15.0 | 15.5±0.5 | ≤8.9 | 0.15±0.05 | 0.27±0.05 | 0.22±0.05 | 0.36±0.05 | 100M | Flat Tube |
| Ф16.0 | 17.0±1.0 | ≤9.5 | 0.15±0.05 | 0.27±0.05 | 0.22±0.05 | 0.36±0.05 | 100M | Flat Tube |
| Ф17.0 | 18.0±1.0 | ≤10.0 | 0.25±0.1 | 0.35±0.1 | - | - | 100M | Flat Tube |
| Ф18.0 | 19.0±1.0 | ≤10.5 | 0.25±0.1 | 0.35±0.1 | - | - | 100M | Flat Tube |
| Ф19.0 | 20.0±1.0 | ≤11.2 | 0.25±0.1 | 0.4±0.1 | - | - | 100M | Flat Tube |
| Ф20.0 | 21.0±1.0 | ≤11.8 | 0.25±0.1 | 0.4±0.1 | - | - | 100M | Flat Tube |
| Ф25.0 | 26.0±1.0 | ≤14.7 | 0.25±0.1 | 0.4±0.1 | - | - | 50M | Flat Tube |
| Ф30.0 | 31.0±1.0 | ≤17.6 | 0.35±0.2 | 0.6±0.2 | - | - | 50M | Flat Tube |
| Ф35.0 | 37.0±2.0 | ≤20.5 | 0.55±0.2 | 1.0±0.2 | - | - | 50M | Flat Tube |
| Ф40.0 | 42.0±2.0 | ≤23.5 | 0.55±0.2 | 1.0±0.2 | - | - | 50M | Flat Tube |
Shrinkage Ratio 4:1
| Specification | Inner Diameter (mm) | Wall Thickness (mm) | Packing | Tube Type | ||
| Before Contraction | After Contraction | Before Contraction | After Contraction | |||
| 1.5 | 1.8±0.4 | ≤0.38 | 0.08±0.05 | 0.25±0.05 | 200M/Tray | Round Tube |
| 2.0 | 2.4±0.4 | ≤0.50 | 0.08±0.05 | 0.25±0.05 | 200M/Tray | Round Tube |
| 2.5 | 2.9±0.4 | ≤0.63 | 0.08±0.05 | 0.25±0.05 | 200M/Tray | Round Tube |
| 3.0 | 3.4±0.4 | ≤0.75 | 0.08±0.05 | 0.25±0.05 | 200M/Tray | Round Tube |
| 3.5 | 3.9±0.4 | ≤0.88 | 0.08±0.05 | 0.25±0.05 | 200M/Tray | Round Tube |
| 4.0 | 4.4±0.4 | ≤1.0 | 0.08±0.05 | 0.25±0.05 | 200M/Tray | Round Tube |
| 4.5 | 4.8±0.4 | ≤1.10 | 0.08±0.05 | 0.30±0.05 | 200M/Tray | Round Tube |
| 4.8 | 5.3±0.4 | ≤1.20 | 0.08±0.05 | 0.30±0.05 | 200M/Tray | Round Tube |
| 5.0 | 5.5±0.5 | ≤1.25 | 0.08±0.05 | 0.30±0.05 | 100M/Tray | Round Tube |
| 6.0 | 6.5±0.5 | ≤1.50 | 0.10±0.05 | 0.30±0.05 | 100M/Tray | Round Tube |
| 6.5 | 7.0±0.5 | ≤1.63 | 0.10±0.05 | 0.30±0.05 | 100M/Tray | Flat Tube |
| 7.0 | 7.5±0.5 | ≤1.75 | 0.10±0.05 | 0.30±0.05 | 100M/Tray | Flat Tube |
| 8.0 | 8.5±0.5 | ≤2.0 | 0.10±0.05 | 0.30±0.05 | 100M/Tray | Flat Tube |
| 9.0 | 9.5±0.5 | ≤2.3 | 0.10±0.05 | 0.30±0.05 | 100M/Tray | Flat Tube |
| 9.5 | 10.0±0.5 | ≤2.4 | 0.10±0.05 | 0.30±0.05 | 100M/Tray | Flat Tube |
| 10.0 | 10.3±0.5 | ≤2.5 | 0.10±0.05 | 0.30±0.05 | 100M/Tray | Flat Tube |
| 11.0 | 12.0±1 | ≤2.75 | 0.10±0.05 | 0.30±0.05 | 100M/Tray | Flat Tube |
| 12.0 | 13.0±1 | ≤3.0 | 0.10±0.05 | 0.30±0.05 | 100M/Tray | Flat Tube |
| 14.0 | 14.0±1 | ≤3.5 | 0.10±0.05 | 0.35±0.05 | 100M/Tray | Flat Tube |
| 16.0 | 15.0±1 | ≤4.0 | 0.10±0.05 | 0.35±0.05 | 100M/Tray | Flat Tube |
Frequently Asked Questions
What is the maximum continuous operating temperature of this PTFE heat shrink tubing?
This PTFE heat shrink tubing supports continuous use from -80°C to 260°C. Short-term exposure to slightly higher temperatures is possible, and shrinkage is triggered at temperatures above 300°C for tight encapsulation.
What shrink ratios are available, and how do I choose the right one?
Two shrink ratios are available: 1.7:1 and 4:1. The 1.7:1 ratio is suitable for applications where a moderate reduction in diameter is needed, while the 4:1 ratio provides a much tighter fit and is ideal for irregular shapes or components requiring maximum sealing and strain relief. Refer to the specification sheet for detailed dimensional data.
Is this PTFE heat shrink tubing suitable for medical and aerospace applications?
Yes. The tubing is available with biocompatible certification for use in sterile medical equipment. For aerospace, it provides reliable high-temperature protection for aviation wiring harnesses and connectors.
What chemicals is this tubing resistant to?
The tubing exhibits excellent resistance to strong acids, alkalis, organic solvents, and oils. Under normal conditions, only elemental fluorine and molten alkali metals at high temperatures can affect its chemical stability. It also achieves an "Excellent" rating in ASTM D543 solvent and chemical resistance tests.
Does this product meet flame retardancy and environmental compliance standards?
Yes. The tubing meets the UL94 V-0 flame retardancy standard with an oxygen index greater than 95%, making it non-combustible in air. It is also ROHS compliant, ensuring it meets international environmental requirements.
What is the expected service life of this PTFE heat shrink tubing?
Under normal operating conditions, the expected lifespan is 5–8 years. The tubing maintains its structural integrity and performance characteristics even in harsh environments, including exposure to chemicals, UV radiation (no cracking after 2,000 hours weather resistance testing), and extreme temperatures.