Leading China factory of high-quality silicone heat shrink tube. Flame retardant, high-temp resistant (200°C), flexible & durable. Get custom sizes & colors. Competitive pricing & global shipping. Trusted silicone tube manufacturer.
Shenzhen Forbest is a premier manufacturer and global supplier of high-performance Silicone Heat Shrink Tube. Engineered for excellence in the most demanding electrical, automotive, and aerospace applications, our tubing provides superior insulation, exceptional environmental sealing, and robust mechanical protection.
Unlike standard PVC or polyolefin tubes, our silicone rubber construction ensures unmatched performance across an extreme temperature range, from deep freeze to intense heat, without compromising flexibility or integrity.
Silicone Heat Shrink Tube – Your Premier Manufacturer in China
Shenzhen Forbest solidifies its position as a leading silicone heat shrink tube manufacturer and supplier in China, specializing in advanced heat-shrinkable solutions for global industries.
Our Heat Shrinkable Silicone Rubber Tubing (HSRT) is meticulously engineered from premium organic silicon, delivering an unparalleled combination of high insulation, extreme temperature resistance, superior flexibility, and long-term durability.
Designed to provide a tight, protective seal around cables, connectors, and components, it offers reliable defense against moisture, chemicals, abrasion, and mechanical stress.
As a direct factory, we guarantee top-tier quality, competitive pricing, and extensive customization to meet your exact technical specifications.
Unrivaled Material Properties and Performance
Silicone rubber is the elite choice for applications where performance cannot be compromised. Our silicone heat shrink tube maintains its exceptional properties across a vast operational spectrum.
It exhibits outstanding resistance to UV radiation, ozone, and a wide range of chemicals, ensuring performance does not degrade over time. Upon the application of heat, the tube shrinks radially to form a permanent, conformal seal that is both watertight and dustproof. Key performance characteristics include:
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Wide Temperature Resilience:
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Consistently performs in environments ranging from -60°C to 200°C, making it ideal for applications exposed to both cryogenic conditions and high-heat areas near engines or power units.
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Excellent Electrical Insulation:
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With a high breakdown voltage (≥20 kV/mm) and impressive volume resistivity (2×10¹² Ω·m), it provides superior dielectric strength, preventing short circuits and electrical failures.
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Flame Retardant Safety:
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Meets the stringent UL 224 VW-1 flame retardant standard, significantly resisting the spread of flame and enhancing the safety of electrical assemblies.
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Mechanical Robustness:
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Boasts high tensile strength and tear resistance, ensuring the tubing can withstand physical manipulation, vibration, and harsh operating environments without cracking or splitting.
Comprehensive Applications Across Industries
The unique properties of our silicone heat shrink tubing make it a critical component in numerous high-tech and demanding sectors:
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Aerospace & Aviation:
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Used for protecting wiring harnesses, sensors, and components from extreme temperatures, fuel, and hydraulic fluids, often meeting specifications like MIL-STD-202.
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Automotive & Electric Vehicles (EVs):
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Ideal for battery pack insulation, motor wiring, and protecting connections in high-heat engine bays, providing resistance to coolants and oils.
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Marine & Offshore:
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Excellent moisture and saltwater resistance make it perfect for sealing connections on boats, ships, and offshore platforms.
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Industrial Machinery:
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Protects cables and hoses in manufacturing environments from abrasion, chemical splash, and high ambient temperatures.
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Electronics & Appliances:
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Provides safe and reliable insulation for high-power resistors, capacitors, and other components that generate significant heat.
Our Extensive Silicone Heat Shrink Tubing Product Range
At Shenzhen Forbest, we cater to a global clientele with a diverse and customizable product portfolio. Our capabilities as a flexible China supplier and factory allow us to serve both standard and highly specialized needs.
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Standard HSRT Series: Our core product line offers reliable 2:1 shrink ratio tubing in various diameters and standard colors, compliant with key international electrical and flame safety standards.
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Flame Retardant Grade: Specifically formulated to achieve the highest VW-1 flame retarding value, this grade is essential for applications where fire safety is a non-negotiable priority.
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High-Strength & High-Flexibility Grades: We offer variants optimized for maximum tear resistance and elongation at break (up to 300%), designed for dynamic applications where constant flexing and movement are expected.
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Custom Formulations & Colors: Our in-house R&D and compounding expertise allow us to develop custom silicone compounds.
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We can match any color for coding or branding purposes and adjust material properties like hardness and shrinkage ratio to suit your unique application.
Why Choose Silicone Heat Shrink Over Other Materials?
The advantages of selecting Shenzhen Forbest’s silicone heat shrink are clear and decisive:
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Superior High-Temp Performance: Outperforms PVC and polyolefin tubes, which can melt or become brittle. Our silicone tubing remains flexible and functional at continuous temperatures up to 200°C.
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Permanent Sealing & Protection: Creates an environmentally sealed barrier that protects against moisture, corrosion, and contaminants, significantly extending the lifespan of components.
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Enhanced Abrasion & Chemical Resistance: The tough, resilient silicone surface resists wear from rubbing and exposure to many oils, solvents, and acids.
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Excellent Flexibility: Even after shrinking, the tube remains flexible, making it perfect for applications involving movement or vibration.
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Halogen-Free & Environmentally Friendly: Unlike some other materials, silicone is inherently halogen-free, producing minimal toxic smoke if exposed to extreme fire.
Why Partner with Shenzhen Forbest as Your Silicone Heat Shrink Manufacturer?
Selecting the right manufacturing partner is crucial for your supply chain’s reliability and product quality. Shenzhen Forbest is your ideal choice for several compelling reasons:
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Direct Factory Source & Cost Efficiency: As a leading manufacturer and factory based in China, we provide highly competitive pricing by eliminating middlemen, offering you superior value without compromising on quality.
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Rigorous Quality Assurance: Our state-of-the-art production facility operates under strict quality management systems. Every batch of our silicone rubber sleeve is tested for critical properties like shrinkage ratio, dielectric strength, and flame retardancy.
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Technical Expertise & Support: Our experienced engineering team provides unparalleled support, helping you select the correct grade, size, and material specification to ensure optimal performance in your application.
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Rapid Prototyping & Lead Times: We understand the importance of speed to market. Our efficient processes enable quick prototyping and reliable lead times, ensuring your projects stay on schedule.
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Global Export Capability: We are a seasoned exporter with extensive experience in international logistics, ensuring smooth and timely delivery to your destination, whether in North America, Europe, or elsewhere.
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Silicone Heat shrink tube Specification
| Spec | ID(D) mm | After Shrink(mm) | |
| ID (d) | Wall (W) | ||
|
φ0.8 |
≥0.8 |
0.50±0.10 |
0.60±0.10 |
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φ 1.0 |
≥1.0 |
0.60±0.10 |
0.60±0.10 |
|
φ 1.5 |
≥1.5 |
0.90±020 |
0.70±0.10 |
|
φ2.0 |
≥2.0 |
1.20±0.20 |
0.70±0.10 |
|
φ2.5 |
≥2.5 |
1.50±0.20 |
0.70±0.10 |
|
φ3.0 |
≥3.0 |
1.85±0.20 |
0.75±0.10 |
|
φ3.5 |
≥3.5 |
2.20±0.20 |
0.75±0.10 |
|
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|
φ4.5 |
≥4.5 |
2.80±0.20 |
0.75±0.10 |
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|
φ5.0 |
≥5.0 |
3.10±0.20 |
0.75±0.10 |
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|
φ5.5 |
≥5.5 |
3.40±0.20 |
0.75±0.10 |
|||||||
|
φ6.0 |
≥6.0 |
3.75±0.20 |
0.80±0.10 |
|||||||
|
φ6.5 |
≥6.5 |
4.00±0.20 |
0.80±0.10 |
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|
φ7.0 |
≥7.0 |
4.35±0.20 |
0.80±0.10 |
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|
φ8.0 |
≥8.0 |
5.00±0.20 |
0.80±0.10 |
|||||||
|
φ9.0 |
≥9.0 |
5.60±0.20 |
0.80±0.10 |
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|
φ 10 |
≥10.0 |
6.25±0.20 |
1.60±0.20 |
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|
φ 12 |
≥12.0 |
7.50±0.30 |
1.60±0.20 |
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|
φ 15 |
≥15.0 |
9.30±0.30 |
1.70±0.20 |
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|
φ 16 |
≥16.0 |
10.00±0.30 |
1.70±0.20 |
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|
φ 18 |
≥18.0 |
11.25±0.50 |
1.70±0.20 |
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|
φ20 |
≥20.0 |
12.50±0.60 |
1.70±0.20 |
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|
φ35 |
≥35.0 |
21.80±1.00 |
1.70±0.20 |
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|
φ40 |
≥38.0 |
23.50±2.00 |
1.70±0.20 |
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|
φ50 |
≥47.0 |
29.50±3.00 |
1.70±0.20 |
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|
φ60 |
≥57.0 |
35.50±3.00 |
2.50±0.35 |
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|
φ70 |
≥67.0 |
41.20±3.00 |
2.50±0.35 |
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|
φ80 |
≥77.0 |
47.00±5.00 |
2.50±0.35 |
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|
φ90 |
≥87.0 |
53.00±5.00 |
2.50±0.35 |
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|
φ 110 |
≥107.0 |
64.70±5.00 |
2.50±0.50 |
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For samples, technical data sheets, or to discuss your custom heat shrinkable silicone rubber tubing requirements, contact the experts at Shenzhen Forbest today. Let us provide you with a protective sealing solution that guarantees performance, safety, and exceptional value.