1. Definition

What is high-silica fiberglass rope? High-silica fiberglass rope is a flexible, high-temperature-resistant sealing material made from glass fibers with a high silica content (>96% SiO₂). It is typically produced using a braided, twisted, or sleeved process. It offers excellent high-temperature resistance and insulation properties and is commonly used for industrial high-temperature sealing, fire protection, insulation, and thermal conductivity isolation. Its core features are as follows:

High-temperature resistance: It can withstand long-term use at temperatures up to 1000°C and short-term temperatures up to 1650°C.

Excellent insulation: It has high dielectric strength and is suitable for protecting electrical equipment.

High flexibility: It can be bent and wound, making it suitable for filling irregular gaps.

Corrosion resistance: It is resistant to acids, alkalis, and most chemicals.

Environmentally friendly and safe: It contains no asbestos and is non-toxic and harmless.

2. Advantages

High-efficiency sealing: It is suitable for high-temperature sealing of furnace doors, boilers, and kilns.

Various structures: Round, square, and hollow ropes are available to meet different working conditions.

Easy Installation: Highly flexible, easy to cut and assemble.

Long Life: High silica content ensures stable performance in extreme environments.

3. Applications

Metallurgy and Power: Boiler and furnace door sealing.

Petrochemical: High-temperature sealing of pipelines and valves.

Building Fire Protection: Fire doors and expansion joint filling.

Electrical Insulation: High-temperature motor and cable protection.

Aerospace: Insulation and protection of high-temperature equipment.

4. Selection Guide

By Shape: Round rope is suitable for pipe sealing, square rope is suitable for flat joints, and hollow rope reduces weight while maintaining sealing performance.

By Diameter: Specifications range from 0.5mm to 3.5mm, and can be selected based on gap size.

By Temperature Resistance Requirements: Confirm whether the operating temperature is within the long-term operating range (≤1000°C).

Coating Required: Silicone, graphite, or PTFE coatings are available to enhance wear resistance and sealing performance.

5. FAQ

What is the long-term temperature tolerance of high-silica fiberglass rope? 

It can withstand long-term use at 1000°C and short-term use at up to 1650°C.

What's the difference between high-silica fiberglass rope and ordinary fiberglass rope?

High-silica rope has a higher silicon content and offers enhanced heat resistance, making it suitable for extremely high-temperature applications.

Can it be used for insulation of electrical equipment?

Yes, it offers excellent insulation properties and is non-conductive.

6. Summary

High-silica fiberglass rope is a flexible, high-temperature-resistant industrial sealing material with excellent insulation properties. It is widely used in metallurgy, power generation, petrochemicals, building fire protection, and aerospace, making it an ideal alternative to traditional asbestos rope. We are a Chinese fiberglass manufacturer. If you're looking for high-quality high-silica rope, our products are a great choice. For more information, please contact us by email at annayu@169chem.net or WhatsApp: +8618909016373.