Silicone Extruded Industrial Heating Tapes

Jaye Heater Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of silicone extruded industrial heating tapes in China, also supports custom service. Welcome to wholesale high quality silicone extruded industrial heating tapes at competitive price from our factory.

The core structure of silicone extruded industrial heating tapes is as follows:

• Heating wire: Ni-chromium alloy or constantan alloy resistance wire, precisely wound around a glass fiber core.
• Insulation layer: Food-grade/industrial grade silicone rubber is uniformly wrapped around the heating core through an extrusion process.
• Outer protection layer: Some models have an additional glass fiber braided layer or metal braided layer to enhance mechanical strength.
• Electrical connection: High-temperature resistant wires and crimp terminals; some models include a temperature control probe interface.

2.1 Material Advantages

• Wide Temperature Range: -60℃ to +250℃ continuous operation, peak temperature up to 300℃
• Chemical Stability: Resistant to ozone, UV radiation, weak acids and alkalis, and organic solvents
• Electrical Properties: Dielectric strength ≥5kV/mm, volume resistivity ≥1×10¹⁴ Ω·cm
• Mechanical Properties: Tensile strength ≥5MPa, tear strength ≥20kN/m

2.2 Structural Advantages

• Uniform Heating: Extrusion process ensures uniform coating of the heating wire, resulting in high heat conduction consistency.
• Waterproof and Moisture-proof: IP67/IP68 rating, suitable for operation in humid and oily environments.
• Excellent Flexibility: Minimum bending radius up to 3 times the wire diameter (typical value 15-25mm).
• Easy Installation: Self-adhesive backing or quick installation with fixing straps.

2.3 Application Advantages

• High Thermal Efficiency: Surface power density can reach 2.5-3.5 W/cm²
• Fast Thermal Response: Silicone has a thermal conductivity of 0.2-0.3 W/(m·K) and low thermal inertia.
• Safe and Reliable: Multiple insulation layers; explosion-proof models are ATEX/IECEx certified.

1. Size
2. Wattage and Power
3. Size
4. quantity

Q1: What are the core advantages of extrusion compared to calendering?

A: Extrusion allows for seamless, continuous coating, overcoming the waterproof weakness at the seams in calendering. Extruded silicone has a higher density (1.25-1.30 g/cm³), improving thermal conductivity uniformity by 15-20%, making it particularly suitable for applications requiring uniform heating, such as pipeline heating.

Q2: How to select a model for explosion-proof areas?

A: Explosion-proof models certified by ATEX or IECEx must be selected. Key requirements:

• Surface temperature not exceeding 80% of the ignition temperature of the gas in the area.
• Power density ≤ 25 W/m³ (Class II, Zone 2)
• Installation must meet grounding continuity requirements (resistance ≤ 1 Ω)
• Low-voltage models (≤ 50V) are recommended.

Q3: How to assess performance degradation after long-term use? A: Three key parameters need to be monitored:

• Insulation resistance change: Normally it should be maintained >10MΩ. If it drops below 1MΩ, attention is needed.
• Power decay: The power decay of the nickel-chromium alloy should be <5% after 3000 hours.
• Flexibility change: The increase in hardness of the silicone should not exceed 10 Shore A.

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