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China Flame Retardant-Grade Silicone Heat Shrink Tubing Supplier | High-Quality Factory Products
Key Features
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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.
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 |
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Frequently Asked Questions
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This silicone heat shrink tube complies with stringent flame retardancy standards including UL 94 V-0 and VW-1. It self-extinguishes rapidly upon removal from an open flame, effectively preventing fire propagation and significantly improving electrical safety in critical applications.
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The tube is rated for continuous use from -60℃ to 200℃, with short-term tolerance up to 260℃. This makes it suitable for extreme environments including high-temperature industrial equipment, outdoor installations, and freezing-cold applications without deformation or performance degradation.
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The flame retardant silicone heat shrink tube is available in two shrink ratios: 1.7 times and 2 times. Both variants cover a wide range of inner diameter specifications from 1.0 mm up to 220 mm, with varying wall thicknesses to suit different application requirements.
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Yes. The product fully complies with RoHS and REACH environmental directives. It is halogen-free, non-toxic, and odorless, and produces low smoke upon combustion. This makes it safe for use in consumer electronics, household appliances, and other applications with strict environmental and safety requirements.
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This product is widely used across multiple industries including transportation (high-speed trains, military vehicles, ships, aerospace), power and new energy (transformers, photovoltaic inverters, wind turbines), high-end manufacturing (petrochemical, metallurgical, instrumentation), and electronics & electrical appliances (household appliances, lighting fixtures, industrial equipment).
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The MOQ varies by specification size. Smaller diameter tubes (1.0 mm–2.5 mm) have an MOQ of 2000M per order, while larger sizes have reduced MOQs accordingly, down to 75M–100M for diameters of 90 mm and above. Packing is available in 200M, 100M, 50M, 25M rolls, or 1M-Bar format depending on the specification.