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    China Flame Retardant-Grade Silicone Heat Shrink Tubing - Top Suppliers & Reliable Factory Quality
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    China Flame Retardant-Grade Silicone Heat Shrink Tubing - Top Suppliers & Reliable Factory Quality

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    Product Overview

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    Our Flame Retardant-Grade Silicone Heat Shrink Tubing, proudly produced in China, is designed to offer top-tier protection for your critical circuits and equipment. Manufactured from high-quality silicone rubber, our tubing utilizes advanced flame-retardant formulations and innovative radiation modification processes, ensuring superior performance.

    ,

    This tubing not only maintains the essential properties of silicone rubber, including exceptional resistance to extreme temperatures, outstanding weatherability, flexibility, and high insulation performance, but also features remarkable flame-retardant capabilities. As a leading supplier in the industry, our factory prioritizes safety by effectively preventing flame spread, thereby enhancing the safety of your electrical systems.

    ,
    • Project: Fire retardant type
    • Shrink Temperature(℃): More than 100
    • Temperature Range(℃): -50-170
    • Tensile Strength(MPa): ≥5.0
    • Fire Retardant Grade(UL-94): V1 (3mm thickness)
    Contact us
    Product Details

    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 Application3
    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.

    China Flame retardant-grade Silicone heat-shrink tube factory2
    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 standards does this silicone heat shrink tube comply with? +
    This silicone heat shrink tube complies with UL 94 V-0 and VW-1 flame retardancy standards. It self-extinguishes rapidly upon removal from an open flame, effectively preventing fire spread and ensuring superior electrical safety across demanding applications.
    What is the operating temperature range of the flame retardant silicone heat shrink tube? +
    The product supports continuous long-term operation 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? +
    We offer two main shrink ratios: 1.7 times and 2 times. Each ratio is available in a wide range of specifications from 1.0 mm up to 220 mm inner diameter, accommodating diverse application requirements in industries such as transportation, power, and electronics.
    Is this product compliant with RoHS and REACH environmental directives? +
    Yes. The flame retardant silicone heat shrink tube fully complies with both RoHS and REACH environmental directives. It is halogen-free, non-toxic, odorless, and produces low smoke upon combustion, making it safe for personnel and the surrounding environment.
    What industries and applications is this silicone heat shrink tube suitable for? +
    This product is widely used across multiple high-demand industries including transportation (high-speed trains, aerospace, military vehicles, ships), 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).
    What is the minimum order quantity (MOQ) and how is the product packaged? +
    MOQ varies by specification size. Smaller diameter tubes (e.g., 1.0–2.5 mm) have an MOQ of 2000M packed in 200M rolls, while larger diameters (e.g., 90 mm and above) have an MOQ of 75M–100M packed as 1M-Bar coils. Please refer to the specification sheet above or contact us directly for the MOQ applicable to your required size.