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China Flame Retardant-Grade Silicone Heat Shrink Tubing Factory | Trusted Suppliers for High-Quality Protection
🔑 Key Features
-
Exceptional Flame Retardancy
The product complies with stringent flame retardancy standards such as UL 94 V-0 or VW-1. It self-extinguishes quickly in an open flame, effectively suppressing fire spread and significantly enhancing electrical safety.
-
Wide Operating Temperature Range
Capable of continuous long-term use in extreme temperatures from -60℃ to 200℃, with short-term tolerance up to 260℃. It performs stably without deformation in harsh environments like high-temperature baking or freezing conditions.
-
Superior Electrical Insulation
Possesses high dielectric strength (typically 19.7 KV/mm to 25 KV/mm) and volume resistivity (≥2×10¹² Ω·cm), offering reliable insulation protection for wires, cables, and electronic components, preventing short circuits and leakage.
-
Excellent Physical & Chemical Stability
High tensile strength (≥6.5 MPa), good elongation, and tear resistance. It also exhibits excellent resistance to acids, alkalis, solvents, oils, and ozone aging, protecting against various chemical corrosions and harsh outdoor environments.
-
Environmental Safety
Complies with environmental directives like RoHS and REACH. It is halogen-free, non-toxic, odorless, and produces low smoke upon combustion, ensuring safety for both people and the environment.
📊 Characteristics
Project |
Fire retardant type |
Shrink Temperature(℃) |
More than 100 |
Temperature Range(℃) |
-50-170 |
Tensile Strength（MPa） |
≥5.0 |
Tearing strength; peeling strength（KN/m） |
≥25 |
Ultimate Elongation（%） |
≥400 |
Pull off permanent deformation（%） |
≥20 |
Rebound degree（%） |
≥25 |
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
This product is widely used in fields demanding high safety and reliability:
Product Application
◎ Transportation: Insulation and protection for wiring harness terminals in high-speed trains, military vehicles, ships, and aerospace equipment.
◎ Power & New Energy: Insulation and sealing protection for high-voltage electrical connections in special transformers, motors, photovoltaic inverters, and wind turbine generators.
Product Application
◎ High-End Manufacturing: Cable protection for equipment in petrochemical, metallurgical electronics, and instrumentation industries, offering both corrosion and flame resistance.
◎ Electronics & Electrical Appliances: Insulation sleeving and safety protection for internal cables in household appliances (e.g., coffee makers, water heaters), industrial electrical equipment, and lighting fixtures.
📋 Product Specification Sheet
Silicone heat-shrink tube (flame retardant) 1.7 times | ||||||
Specifications |
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 (flame retardant) 2 times | ||||||
Specifications |
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 |
1.1±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 |
✉️ Make a Free Consultation
❓ Frequently Asked Questions
What flame retardancy rating does this silicone heat shrink tube meet?
This product complies with stringent flame retardancy standards including UL 94 V-0 and VW-1. It self-extinguishes quickly upon exposure to open flame, effectively suppressing fire spread and significantly enhancing electrical safety in demanding applications.
What is the operating temperature range of this flame retardant silicone heat shrink tube?
The tube is designed for continuous long-term use in extreme temperatures ranging from -60℃ to 200℃, with short-term tolerance up to 260℃. It maintains stable performance without deformation in both high-temperature baking environments and freezing conditions.
What shrink ratios are available for this silicone heat shrink tube?
This product is available in two shrink ratios: 1.7 times and 2 times. Both options cover a wide range of specifications from 1.0mm to 220mm inner diameter, suitable for various wire and cable sizes across different industries.
Is this product compliant with RoHS and REACH environmental directives?
Yes, this silicone heat shrink tube fully complies with RoHS and REACH environmental directives. It is halogen-free, non-toxic, and odorless. Upon combustion, it produces low smoke, ensuring safety for both personnel and the environment.
What industries and applications is this flame retardant silicone heat shrink tube suitable for?
This product is widely used in transportation (high-speed trains, aerospace, military vehicles, ships), power and new energy (transformers, photovoltaic inverters, wind turbines), high-end manufacturing (petrochemical, metallurgical electronics), and electronics & electrical appliances (household appliances, industrial equipment, lighting fixtures).
What is the dielectric strength and electrical insulation performance of this product?
This silicone heat shrink tube offers high dielectric strength typically ranging from 19.7 KV/mm to 25 KV/mm, with a volume resistivity of ≥2×10¹² Ω·cm. It provides reliable insulation protection for wires, cables, and electronic components, effectively preventing short circuits and electrical leakage.