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High-Purity Silicone Heat Shrink Tube from China Suppliers | Top Factory Quality and Performance
★Features
-
◎ Enhanced Softness and Strength
Operating from -60°C to 200°C, it withstands prolonged exposure to high-temperature baking, freezing, and rapid thermal cycling, preventing material tendering or deformation. Ideal for automotive engine compartments and industrial ovens.
-
◎ Superior Flexibility & Sealing
The silicone material ensures high elasticity, allowing the tubing to shrink tightly around cables and form a seamless seal against moisture, dust, and chemical gases. Its tear resistance surpasses standard heat shrink tubing, resisting mechanical bending and vibration-induced cracking.
-
◎ High Insulation & Dielectric Performance
With a dielectric strength exceeding 20kV/mm, it provides reliable insulation for high-voltage cables, preventing leakage and arcing. Low dielectric constant and loss tangent (tanδ) make it suitable for high-frequency signal transmission, minimizing signal attenuation.
-
◎ Environmental & Safety Compliance
RoHS and REACH compliant, free from halogens and phthalates. Low smoke and halogen-free upon combustion, ensuring safety in aerospace and rail transit applications. UL 94 V-0 flame retardant certified.
📋Characteristics
Project |
Bright type |
Shrink Temperature(℃) |
More than 100 |
Usage Temperature Range(℃) |
-50-200 |
Tensile Strength（MPa） |
≥3.0 |
Tearing strength；peeling strength（KN/m） |
≥10 |
Ultimate Elongation（%） |
≥250 |
Pull off permanent deformation（%） |
≥5.0 |
rebound ratio（%） |
≥30 |
Proportion（G/mL） |
1.2±0.1 |
Dielectric strength（KV/mm） |
≥20 |
Fire retardant grade (UL-94) |
V1 (3mm thickness) |
Hardness(A) |
65±10 |
🔧Application
Product Application
Glossy silicone heat shrink tubing is widely used in demanding sectors due to its heat resistance, flexibility, and environmental safety. In electronics, it safeguards PCBs, sensors, and connectors from mechanical damage and EMI. For automotive applications, it protects battery packs, wiring harnesses, and engine components against oil and vibration. In renewable energy, it resists UV rays and outdoor conditions for solar inverters and wind turbines.
Product Application
Medical devices benefit from its biocompatibility, ensuring sterile cable protection. Home appliances like coffee machines and microwaves rely on its insulation and sealing. Aerospace applications utilize its extreme temperature tolerance for aircraft wiring. The glossy surface aids cleaning and maintenance, ideal for automated production lines.
📐Product specification sheet
Silicone heat-shrink tube(bright)1.7Times | ||||||
Specification |
Before contraction |
After contraction |
Packing |
MOQ |
||
Inner diameter |
Wall thickness |
Inner diameter |
Wall thickness |
|||
1.0 |
1.0-1.5 |
0.5±0.1 |
0.54-0.69 |
0.8±0.15 |
200M |
2000M |
1.5 |
1.5-2.0 |
0.5±0.1 |
0.81-1.03 |
0.8±0.15 |
200M |
2000M |
2.0 |
2.0-2.5 |
0.5±0.1 |
1.08-1.38 |
0.8±0.15 |
200M |
2000M |
2.5 |
2.5-3.0 |
0.5±0.1 |
1.35-1.72 |
0.8±0.15 |
200M |
2000M |
3.0 |
3.0-3.5 |
0.5±0.1 |
1.62-2.07 |
0.8±0.15 |
200M |
1200M |
3.5 |
3.5-4.2 |
0.5±0.1 |
1.89-2.41 |
0.8±0.15 |
200M |
1200M |
4.0 |
4.0-4.8 |
0.5±0.1 |
2.16-2.76 |
0.8±0.15 |
200M |
1200M |
4.5 |
4.5-5.3 |
0.5±0.1 |
2.43-3.1 |
0.8±0.15 |
200M |
1200M |
5.0 |
5.0-5.8 |
0.5±0.1 |
2.7-3.45 |
0.8±0.15 |
200M |
1200M |
5.5 |
5.5-6.5 |
0.5±0.1 |
2.97-3.79 |
0.8±0.15 |
200M |
1000M |
6.0 |
6.0-7.0 |
0.5±0.1 |
3.24-4.14 |
0.8±0.15 |
200M |
1000M |
6.5 |
6.5-7.5 |
0.5±0.1 |
3.51-4.48 |
0.9±0.15 |
200M |
1000M |
7.0 |
7.0-8.0 |
0.5±0.1 |
3.78-4.83 |
0.9±0.15 |
100M |
1000M |
7.5 |
7.5-8.5 |
0.5±0.1 |
4.05-5.17 |
0.9±0.15 |
100M |
1000M |
8.0 |
8.0-9.2 |
0.5±0.1 |
4.32-5.52 |
0.9±0.15 |
100M |
1000M |
8.5 |
8.5-9.7 |
0.5±0.15 |
4.59-5.86 |
0.9±0.15 |
100M |
1000M |
9.0 |
9.0-10.3 |
0.5±0.15 |
4.86-6.21 |
0.9±0.15 |
100M |
1000M |
10 |
10-11.5 |
0.5±0.15 |
5.41-6.9 |
0.9±0.15 |
100M |
500M |
11 |
11-12.5 |
0.5±0.15 |
5.95-7.59 |
0.9±0.15 |
100M |
500M |
10 |
10-12 |
1.0±0.2 |
5.41-6.9 |
1.8±0.2 |
50M |
500M |
11 |
11-13 |
1.0±0.2 |
5.95-7.59 |
1.8±0.2 |
50M |
500M |
12 |
12-14 |
1.0±0.2 |
6.49-8.28 |
1.8±0.2 |
50M |
500M |
13 |
13-15.5 |
1.0±0.2 |
7.03-8.97 |
1.8±0.2 |
50M |
500M |
14 |
14-16.5 |
1.0±0.2 |
7.57-9.66 |
1.8±0.2 |
50M |
500M |
15 |
15-17.5 |
1.0±0.2 |
8.11-10.34 |
1.9±0.2 |
50M |
500M |
16 |
16-18.8 |
1.0±0.2 |
8.65-11.03 |
1.9±0.2 |
50M |
500M |
17 |
17-19.8 |
1.0±0.2 |
9.19-11.72 |
1.9±0.2 |
50M |
300M |
18 |
18-20.8 |
1.0±0.2 |
9.73-12.41 |
1.9±0.2 |
50M |
300M |
19 |
19-21.8 |
1.0±0.2 |
10.27-13.1 |
1.9±0.2 |
50M |
300M |
20 |
20-22.8 |
1.0±0.25 |
10.81-13.79 |
2.0±0.2 |
50M |
300M |
21 |
21-24.5 |
1.0±0.25 |
11.35-14.48 |
2.0±0.2 |
25M |
300M |
22 |
22-25.5 |
1.0±0.25 |
11.89-15.17 |
2.0±0.2 |
25M |
300M |
25 |
25-28.5 |
1.0±0.25 |
13.51-17.24 |
2.0±0.2 |
25M |
200M |
30 |
30-34 |
1.0±0.25 |
16.22-20.69 |
2.0±0.2 |
25M |
200M |
35 |
35-40 |
1.0±0.25 |
18.92-24.14 |
2.1±0.3 |
25M |
200M |
40 |
40-45 |
1.0±0.3 |
21.62-27.59 |
2.1±0.3 |
25M |
200M |
45 |
45-50 |
1.0±0.3 |
24.32-31.03 |
2.1±0.3 |
25M |
150M |
50 |
50-56 |
1.0±0.3 |
27.03-34.48 |
2.1±0.3 |
25M |
150M |
60 |
60-66 |
1.0±0.3 |
32.43-41.38 |
2.1±0.3 |
25M |
150M |
70 |
65-80 |
1.0±0.4 |
37.84-48.27 |
2.1±0.3 |
25M |
100M |
80 |
75-90 |
1.0±0.4 |
43.24-55.17 |
2.2±0.35 |
25M |
100M |
90 |
85-100 |
1.3±0.3 |
48.65-62.07 |
2.5±0.3 |
1M-Bar |
100M |
100 |
95-110 |
1.3±0.35 |
54.05-68.97 |
2.5±0.35 |
1M-Bar |
100M |
110 |
105-120 |
1.3±0.35 |
59.46-75.86 |
2.6±0.35 |
1M-Bar |
100M |
120 |
115-130 |
1.4±0.35 |
64.86-82.76 |
2.6±0.4 |
1M-Bar |
75M |
130 |
125-140 |
1.4±0.4 |
70.27-89.66 |
2.6±0.4 |
1M-Bar |
75M |
140 |
130-150 |
1.5±0.4 |
75.68-96.55 |
2.6±0.4 |
1M-Bar |
75M |
150 |
140-160 |
1.5±0.4 |
81.08-103.45 |
2.7±0.4 |
1M-Bar |
75M |
160 |
150-170 |
1.5±0.4 |
85-95 |
2.8±0.4 |
1M-Bar |
75M |
170 |
160-180 |
1.5±0.4 |
85-95 |
3.0±0.4 |
1M-Bar |
75M |
180 |
170-190 |
1.5±0.4 |
85-95 |
3.2±0.4 |
1M-Bar |
75M |
190 |
180-200 |
1.5±0.5 |
95-105 |
3.2±0.5 |
1M-Bar |
75M |
200 |
190-210 |
1.5±0.5 |
95-110 |
3.2±0.5 |
1M-Bar |
75M |
210 |
200-220 |
1.5±0.5 |
95-110 |
3.2±0.5 |
1M-Bar |
75M |
220 |
210-230 |
1.5±0.5 |
95-110 |
3.2±0.5 |
1M-Bar |
75M |
Silicone heat shrink tube(bright)2Times | ||||||
Specification |
Before contraction |
After contraction |
Packing |
MOQ |
||
Inner diameter |
Wall thickness |
Inner diameter |
Wall thickness |
|||
1.0 |
1.0-1.5 |
0.5±0.1 |
0.49-0.56 |
1.0±0.15 |
200M |
2000M |
1.5 |
1.5-2.0 |
0.5±0.1 |
0.73-0.83 |
1.0±0.15 |
200M |
2000M |
2.0 |
2.0-2.5 |
0.5±0.1 |
0.98-1.11 |
1.0±0.15 |
200M |
2000M |
2.5 |
2.5-3.0 |
0.5±0.1 |
1.22-1.39 |
1.0±0.15 |
200M |
2000M |
3.0 |
3.0-3.5 |
0.5±0.1 |
1.46-1.67 |
1.0±0.15 |
200M |
1200M |
3.5 |
3.5-4.2 |
0.5±0.1 |
1.71-1.94 |
1.0±0.15 |
200M |
1200M |
4.0 |
4.0-4.8 |
0.5±0.1 |
1.95-2.22 |
1.0±0.2 |
200M |
1200M |
4.5 |
4.5-5.3 |
0.5±0.1 |
2.2-2.5 |
1.0±0.2 |
200M |
1200M |
5.0 |
5.0-5.8 |
0.5±0.1 |
2.44-2.78 |
1.0±0.2 |
200M |
1200M |
5.5 |
5.5-6.5 |
0.5±0.1 |
2.68-3.06 |
1.0±0.2 |
200M |
1000M |
6.0 |
6.0-7.0 |
0.5±0.15 |
2.93-3.33 |
1.0±0.2 |
200M |
1000M |
6.5 |
6.5-7.5 |
0.5±0.15 |
3.17-3.61 |
1.0±0.2 |
200M |
1000M |
7.0 |
7.0-8.0 |
0.5±0.15 |
3.41-3.89 |
1.0±0.2 |
100M |
1000M |
7.5 |
7.5-8.5 |
0.5±0.15 |
3.66-4.17 |
1.0±0.2 |
100M |
1000M |
8.0 |
8.0-9.2 |
0.5±0.15 |
3.9-4.44 |
1.0±0.2 |
100M |
1000M |
8.5 |
8.5-9.7 |
0.5±0.15 |
4.15-4.72 |
1.0±0.2 |
100M |
1000M |
9.0 |
9.0-10.3 |
0.5±0.15 |
4.39-5 |
1.0±0.2 |
100M |
1000M |
10 |
10-11.5 |
0.5±0.15 |
4.88-5.56 |
1.0±0.2 |
100M |
500M |
11 |
11-12.5 |
0.5±0.15 |
5.37-6.11 |
1.0±0.2 |
100M |
500M |
10 |
10-12 |
1.0±0.2 |
4.88-5.56 |
2.0±0.3 |
50M |
500M |
11 |
11-13 |
1.0±0.2 |
5.37-6.11 |
2.0±0.3 |
50M |
500M |
12 |
12-14 |
1.0±0.2 |
5.85-6.67 |
2.0±0.3 |
50M |
500M |
13 |
13-15.5 |
1.0±0.2 |
6.34-7.22 |
2.0±0.3 |
50M |
500M |
14 |
14-16.5 |
1.0±0.2 |
6.83-7.78 |
2.0±0.3 |
50M |
500M |
15 |
15-17.5 |
1.0±0.2 |
7.32-8.33 |
2.0±0.3 |
50M |
500M |
16 |
16-18.8 |
1.0±0.2 |
7.8-8.89 |
2.0±0.3 |
50M |
500M |
17 |
17-19.8 |
1.0±0.2 |
8.29-9.44 |
2.0±0.3 |
50M |
300M |
18 |
18-20.8 |
1.0±0.2 |
8.78-10 |
2.0±0.3 |
50M |
300M |
19 |
19-21.8 |
1.0±0.2 |
9.27-10.56 |
2.0±0.3 |
50M |
300M |
20 |
20-22.8 |
1.0±0.25 |
9.76-11.11 |
2.0±0.3 |
50M |
300M |
21 |
21-24.5 |
1.0±0.25 |
10.24-11.67 |
2.0±0.3 |
25M |
300M |
22 |
22-25.5 |
1.0±0.25 |
10.73-12.22 |
2.0±0.3 |
25M |
300M |
25 |
25-28.5 |
1.0±0.25 |
12.2-13.89 |
2.0±0.3 |
25M |
200M |
30 |
30-34 |
1.0±0.25 |
14.63-16.67 |
2.0±0.3 |
25M |
200M |
35 |
35-40 |
1.0±0.25 |
17.07-19.44 |
2.0±0.3 |
25M |
200M |
40 |
40-45 |
1.0±0.3 |
19.51-22.22 |
2.0±0.3 |
25M |
200M |
45 |
45-50 |
1.0±0.3 |
21.95-25 |
2.0±0.3 |
25M |
150M |
50 |
50-56 |
1.0±0.3 |
24.39-27.78 |
2.3±0.3 |
25M |
150M |
60 |
60-66 |
1.0±0.3 |
29.27-33.33 |
2.3±0.3 |
25M |
150M |
70 |
65-80 |
1.0±0.4 |
34.15-38.89 |
2.3±0.5 |
25M |
100M |
80 |
75-90 |
1.0±0.4 |
39.02-44.44 |
2.3±0.5 |
25M |
100M |
90 |
85-100 |
1.3±0.3 |
43.9-50 |
2.6±0.6 |
1M-Bar |
100M |
100 |
95-110 |
1.3±0.5 |
48.78-55.56 |
2.6±0.6 |
1M-Bar |
100M |
110 |
105-120 |
1.3±0.5 |
53.66-61.11 |
2.7±0.6 |
1M-Bar |
100M |
120 |
115-130 |
1.3±0.6 |
58.54-66.67 |
2.8±0.7 |
1M-Bar |
75M |
130 |
125-140 |
1.3±0.6 |
63.41-72.22 |
2.8±0.7 |
1M-Bar |
75M |
140 |
130-150 |
1.6±0.6 |
68.29-77.78 |
3.0±0.8 |
1M-Bar |
75M |
150 |
140-160 |
1.6±0.6 |
73.17-83.33 |
3.2±0.8 |
1M-Bar |
75M |
160 |
150-170 |
1.6±0.6 |
85-94 |
3.2±0.8 |
1M-Bar |
75M |
170 |
160-180 |
1.6±0.6 |
85-94 |
3.2±0.8 |
1M-Bar |
75M |
180 |
170-190 |
1.6±0.6 |
85-94 |
3.3±0.8 |
1M-Bar |
75M |
190 |
180-200 |
1.8±1.0 |
95-103 |
3.3±1.0 |
1M-Bar |
75M |
200 |
190-210 |
1.8±1.0 |
95-108 |
3.5±1.0 |
1M-Bar |
75M |
210 |
200-220 |
1.8±1.0 |
95-108 |
3.6±1.2 |
1M-Bar |
75M |
220 |
210-230 |
1.8±1.0 |
95-108 |
3.8±1.2 |
1M-Bar |
75M |
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?Frequently Asked Questions
Q
What is the operating temperature range of this glossy silicone heat shrink tubing?
This silicone heat shrink tubing is rated for continuous use from -50°C to 200°C, with short-term tolerance down to -60°C. It withstands high-temperature baking, deep freezing, and rapid thermal cycling without material tendering or deformation, making it ideal for automotive engine compartments and industrial ovens.
Q
What dielectric strength does this silicone heat shrink tubing offer?
The tubing features a dielectric strength exceeding 20 kV/mm, providing reliable insulation for high-voltage cables and preventing leakage and arcing. Its low dielectric constant and loss tangent (tanδ) also make it well-suited for high-frequency signal transmission applications.
Q
Is this product compliant with RoHS, REACH, and UL 94 standards?
Yes. This glossy silicone heat shrink tubing is fully RoHS and REACH compliant, free from halogens and phthalates. It is UL 94 V-0 flame retardant certified and produces low smoke and halogen-free combustion gases, ensuring safe use in aerospace, rail transit, and other safety-critical environments.
Q
What shrink ratios are available and what are the shrink temperature requirements?
Two shrink ratios are available: 1.7× and 2×. Both types require a shrink temperature of more than 100°C to activate. Detailed inner diameter and wall thickness specifications before and after contraction are available in the product specification sheet for sizes ranging from 1.0 mm up to 220 mm.
Q
In which industries and applications is this silicone heat shrink tubing commonly used?
This tubing is widely applied across electronics (PCBs, sensors, connectors), automotive (battery packs, wiring harnesses, engine components), renewable energy (solar inverters, wind turbines), medical devices (sterile cable protection), home appliances, and aerospace (aircraft wiring). Its glossy surface also makes it easy to clean for automated production lines.
Q
What is the minimum order quantity (MOQ) and how is the product packaged?
MOQ varies by specification size. Smaller sizes (e.g., 1.0–2.5 mm) have an MOQ of 2000M packed in 200M rolls. Medium sizes typically have MOQs of 500M–1200M, while larger sizes (90 mm and above) are supplied in 1M-Bar coils with MOQs starting from 75M. Please refer to the specification sheet for detailed packing and MOQ information per size.