+86-17688612661 Flame Retardant-Grade Silicone Heat Shrink Tubing - China Factory & Suppliers for Superior Protection
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◎ 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.
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◎ 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.
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◎ 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.
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◎ 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.
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◎ 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.
| 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 |
This product is widely used in fields demanding high safety and reliability:
◎ 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.
◎ 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.
| 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 |
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Q What flame retardancy standard does this silicone heat shrink tube meet?This product complies with UL 94 V-0 or VW-1 flame retardancy standards. It self-extinguishes rapidly upon removal from an open flame, effectively preventing fire spread and enhancing electrical safety in demanding applications.
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Q What is the operating temperature range of the flame retardant silicone heat shrink tube?The tube supports continuous long-term use from -60℃ to 200℃, with short-term tolerance up to 260℃. This wide range makes it suitable for both extreme cold and high-temperature industrial environments without deformation or performance loss.
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Q Is this product compliant with RoHS and REACH environmental directives?Yes. The flame retardant silicone heat shrink tube fully complies with RoHS and REACH environmental standards. It is halogen-free, non-toxic, odorless, and produces low smoke upon combustion, ensuring safety for both personnel and the environment.
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Q What shrink ratios are available for this silicone heat shrink tube?Two shrink ratios are available: 1.7 times and 2 times. Both types are offered in a comprehensive range of sizes from 1.0mm to 220mm inner diameter, with various wall thickness options to suit different application requirements.
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Q What industries and applications is this product suitable for?This product is widely used in transportation (high-speed trains, aerospace, military vehicles), power and new energy (transformers, photovoltaic inverters, wind turbines), high-end manufacturing (petrochemical, metallurgical equipment), and electronics & electrical appliances (household appliances, industrial equipment, lighting fixtures).
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Q What is the minimum order quantity (MOQ) and what packing options are available?MOQ varies by size. Smaller diameter tubes (1.0mm–2.5mm) have an MOQ of 2000M, while larger sizes have progressively lower MOQs down to 75M–100M. Packing options range from 25M and 50M rolls up to 200M rolls and 1M-Bar formats for larger diameter tubes.











