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High Quality PVDF Heat Shrink Tube Factory in China - Reliable Suppliers for Chemical Resistance Solutions
⚙️ Product Features
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🧪 Chemical Resistance
Highly resistant to strong acids, alkalis, organic solvents, and oils, with superior stability compared to traditional plastics.
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🌡️ Broad Temperature Range
Continuous use from -80°C to 175°C; short-term exposure to higher temperatures possible. High thermal deformation temperature prevents cracking after shrinkage.
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🔩 Mechanical Strength & Wear Resistance
High tensile strength, abrasion-resistant, and anti-cutting, suitable for mechanical transmission parts or high-friction environments.
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⚡ Electrical Insulation
Low dielectric constant and loss, volume resistivity >10¹⁴Ω·cm, ensuring reliable high-frequency signal transmission.
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🔥 Flame Retardancy & Safety
Meets UL VW-1 standard, non-dripping during combustion, with high oxygen index for safety-critical applications.
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🔍 Transparency & Customization
Available in transparent or semi-transparent options for internal component inspection; customizable colors (e.g., black, red, blue) and sizes for identification.
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🌿 Environmental Durability
ROHS compliant, UV-resistant, and maintains structural integrity in harsh conditions.
🏭 Application
Product Application
◎ Electronics & Semiconductor: Insulation for high-frequency circuits, solder joint protection, cable labeling.
◎ Industrial & Chemical: Chemical pipeline corrosion resistant, anti-wear for mechanical parts, oil-resistant protection.
Product Application
◎ Medical Devices: Medical-grade products meet USP Class VI standards for sterile equipment insulation and biocompatible applications.
◎ Renewable Energy & Aerospace: Protection for lithium battery modules, high-temperature resistant aviation wiring.
📊 Characteristics
| Performance | Index | Test Method / Condition | Typical Value |
| Tensile strength | 34.5Mpa min | ASTM D 638 | ≥40Mpa |
| Elongation at break | 150% min | ASTM D 638 | ≥300% |
| Elongation at break after thermal aging | 50% min | 250℃×168h | ≥200% |
| Flame retardancy | VW-1 | UL 224 | Pass |
| Longitudinal shrinkage | ≤10% | ASTM D 2671 | ≤5% |
| Volume resistivity | 1013Ω.cm min | ASTM D 876 | ≥1013Ω.cm min |
| Shrinkage temperature | 125℃~150℃ | —— | |
| Usage temperature | —55℃~175℃ | —— | |
| Cold bending flexibility | No crack | -55℃×4h | No crack |
| Thermal shock | No crack | 275℃×4h | No crack |
| Corrosive | No corrosion | ASTM D 2671 | No corrosion |
| Breakdown | 2500V.60sec, No breakdown | ASTM D 2671 | No breakdown |
📋 Product Specification Sheet
Product Specification Sheet ( Shrinkage Ratio 2:1 )
| Size | Inner Diameter Before Contraction | Dimension After Shrinkage | Standard Package (M / Tray) | |
| Internal Diameter | Wall Thickness | |||
| Φ1.2 | ≥1.2 | ≤0.6 | 0.25±0.05 | 200 |
| Φ1.6 | ≥1.6 | ≤0.8 | 0.25±0.05 | 200 |
| Φ2.4 | ≥2.4 | ≤1.2 | 0.25±0.05 | 200 |
| Φ3.2 | ≥3.2 | ≤1.6 | 0.25±0.05 | 200 |
| Φ4.8 | ≥4.8 | ≤2.4 | 0.25±0.05 | 100 |
| Φ6.4 | ≥6.4 | ≤3.2 | 0.30±0.08 | 100 |
| Φ9.5 | ≥9.5 | ≤4.8 | 0.30±0.08 | 100 |
| Φ12.7 | ≥12.7 | ≤6.4 | 0.30±0.08 | 100 |
| Φ19.1 | ≥19.1 | ≤9.5 | 0.43±0.08 | 100 |
| Φ25.4 | ≥25.4 | ≤12.7 | 0.48±0.08 | 50 |
| Φ38.1 | ≥38.1 | ≤19.1 | 0.51±0.08 | 50 |
| Φ50.8 | ≥50.8 | ≤25.4 | 0.58±0.08 | 50 |
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 |
📌 Note
1. The ordinary color is Clear, all other Colors / Specification / Wall Thickness can be made as per customization.
2. High-temperature resistant PVDF Heat Shrink Tube can be made as per customized special sizes and package.
❓ Frequently Asked Questions
💬 What is the operating temperature range of the PVDF heat shrink tube?
The PVDF heat shrink tube supports continuous use from -80°C to 175°C. It can also withstand short-term exposure to higher temperatures, making it suitable for demanding thermal environments including aviation wiring and industrial applications.
💬 What shrinkage ratios are available for the PVDF heat shrink tube?
We offer two standard shrinkage ratios: 2:1 and 4:1. The 2:1 ratio is suitable for general cable insulation and protection, while the 4:1 ratio provides a tighter fit for irregular shapes and larger diameter variations. Custom sizes are also available upon request.
💬 Does the PVDF heat shrink tube meet flame retardancy standards?
Yes. The PVDF heat shrink tube meets the UL VW-1 flame retardancy standard. It is non-dripping during combustion and has a high oxygen index, making it safe for use in safety-critical applications such as aerospace, medical devices, and industrial equipment.
💬 Can the PVDF heat shrink tube be used in medical applications?
Yes. Medical-grade PVDF heat shrink tubes meet USP Class VI standards, making them suitable for sterile equipment insulation and biocompatible applications. They are widely used in medical device manufacturing where safety and reliability are critical.
💬 Are custom colors and sizes available for the PVDF heat shrink tube?
Yes. The standard color is Clear (transparent). Custom colors including black, red, blue, and others are available upon request. Wall thickness, inner diameter, shrinkage ratio, and packaging can all be customized to meet your specific project requirements.
💬 What chemical resistance does the PVDF heat shrink tube offer?
The PVDF heat shrink tube is highly resistant to strong acids, alkalis, organic solvents, and oils. It offers superior chemical stability compared to traditional plastics, making it an ideal choice for chemical pipeline protection, industrial anti-corrosion applications, and harsh chemical environments.