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Fiberglass Insulated Thermocouple Wire

Fiberglass Insulated Thermocouple Wire
Product Introduction:
In high-temperature environments such as furnaces, heat treatment equipment, kilns, boilers, and hot gas ducts, conventional plastic insulation can melt or degrade rapidly. Our Fiberglass insulated thermocouple wire is designed for these extreme conditions. The insulation is made of high-quality glass fiber braid, which is non-combustible and capable of long-term operation at temperatures up to 450°C. It does not melt, soften, or decompose under continuous high-temperature exposure, making it suitable for fixed thermocouple installations in harsh thermal environments.
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Description
Technical Parameters
Withstands Extreme Heat
 

In high-temperature environments such as furnaces, heat treatment equipment, kilns, boilers, and hot gas ducts, conventional plastic insulation can melt or degrade rapidly. Our Fiberglass insulated thermocouple wire is designed for these extreme conditions. The insulation is made of high-quality glass fiber braid, which is non-combustible and capable of long-term operation at temperatures up to 450°C. It does not melt, soften, or decompose under continuous high-temperature exposure, making it suitable for fixed thermocouple installations in harsh thermal environments.

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Stable Performance Under High Temperature

 

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High temperatures can accelerate oxidation and affect conductor stability. This product uses specially selected thermocouple alloys optimized for high-temperature operation. The thermoelectric characteristics remain stable even under prolonged thermal stress, ensuring reliable measurement accuracy.

Both standard and precision accuracy grades are available. The precision grade provides tighter tolerance for applications requiring strict process control. Shielding options, including aluminum foil and tinned copper braid, are available. These shielding materials are thermally stable and designed to maintain integrity under high-temperature conditions. The outer glass fiber braid jacket also provides additional protection against thermal radiation.

Specialty Product with Proven Reliability
 

We have extensive experience in manufacturing high-temperature instrumentation cables. The fiberglass insulated series is one of our core specialty product lines. Each production batch undergoes high-temperature aging tests as well as thermoelectric performance verification to ensure stability and measurement accuracy under thermal stress.

Our products comply with IEC 60584-3 standards and are CE certified. Common thermocouple types such as KX, KC, SX, and TX are available from stock. Custom lengths and conductor configurations are also supported. For export shipments, moisture-resistant packaging is used to ensure product integrity during long-distance transportation.

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Key Specifications

 

Parameter

Specification

Common Models

KX, KC, SX, SC, TX, TC (Fiberglass High-Temperature Type)

Insulation Material

Premium Glass Fiber

Jacket Material

Glass Fiber Braid (High-Temperature Resistant)

Working Temperature

-40°C ~ +450°C (Long-Term Operation)

Shielding Structure

Aluminum Foil / Tinned Copper Braid (Optional)

 

Frequently Asked Questions

 

Q: Which is better for high-temperature environments, fiberglass or fluoroplastic insulation?

A: Fiberglass insulation offers higher temperature resistance, typically up to 450°C for long-term operation, making it suitable for dry high-temperature environments such as furnaces and kilns. Fluoroplastic insulation generally supports temperatures between 200°C and 260°C and provides better performance in humid or chemically aggressive environments. However, fiberglass is more susceptible to moisture absorption. Therefore, selection depends on application conditions: fiberglass is recommended for dry heat applications, while fluoroplastic is more suitable for high-temperature environments with humidity or steam exposure. We can recommend the most suitable solution based on your operating conditions.

Q: Can this cable handle repeated bending?

A: Fiberglass insulation is relatively rigid compared to polymer-based materials and is therefore better suited for fixed installations rather than dynamic applications. Typical use cases include fixed routing from thermocouples through cable trays to control systems. For applications requiring repeated movement or flexing, silicone rubber insulated thermocouple wire is recommended due to its higher flexibility. We offer both types and can help select the appropriate solution based on your installation requirements.

 

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