High Temperature Calcium silicate cloth

High temperature calcium silicate cloth, also known as calcium silicate fabric or insulation cloth, is a specialized textile material made from calcium silicate fibers. It is designed to withstand extreme heat and provide thermal insulation in high-temperature applications. Here’s an overview:


  1. Calcium Silicate Fibers: Calcium silicate cloth is primarily composed of calcium silicate fibers, which are made from calcium oxide (lime), silica (sand), and reinforcing fibers such as cellulose or fiberglass. These fibers are processed and woven into a fabric form.

  2. Binders and Additives: Binders or additives may be added to the calcium silicate fibers to enhance certain properties, such as flexibility, tensile strength, or chemical resistance.

Key Features:

  1. Extreme Heat Resistance: Calcium silicate cloth is capable of withstanding continuous temperatures of up to 1000°C (1832°F) and can withstand short-term exposure to even higher temperatures, making it suitable for use in extreme heat environments such as furnaces, kilns, and industrial ovens.

  2. Thermal Insulation: Calcium silicate fabric provides excellent thermal insulation properties, minimizing heat transfer and maintaining temperature stability in high-temperature equipment and processes. It helps prevent heat loss and improves energy efficiency in various industrial applications.

  3. Low Thermal Conductivity: Calcium silicate cloth has low thermal conductivity, which helps reduce heat transfer through the material, providing effective thermal insulation and protection to surrounding areas or materials.

  4. Flexibility and Durability: Despite its high heat resistance, calcium silicate fabric remains flexible and durable, allowing it to conform to irregular shapes and withstand mechanical stresses, abrasion, and repeated thermal cycling.

  5. Chemical Resistance: Calcium silicate cloth exhibits good resistance to most chemicals, acids, alkalis, and solvents, making it suitable for use in chemical processing, petrochemical, and power generation industries.

  6. Non-Combustible: Calcium silicate fabric is inherently non-combustible and does not support combustion, making it highly resistant to fire and heat. It is often used in fireproofing applications and as a protective barrier against flames and sparks.

  7. Moisture Resistance: Calcium silicate cloth is resistant to moisture and humidity, ensuring long-term performance and stability in various environmental conditions.


  1. High-Temperature Insulation: Calcium silicate fabric is used for thermal insulation in various high-temperature applications, including lining for furnaces, kilns, boilers, and heat treatment equipment to prevent heat loss and improve energy efficiency.

  2. Expansion Joints: It is used in expansion joint seals and gaskets to accommodate thermal expansion and contraction in piping systems, ducts, and exhaust systems in industrial plants and power generation facilities.

  3. Fireproofing: Calcium silicate cloth is used in fireproofing applications for manufacturing fire curtains, fire doors, and fire blankets to contain fires, prevent heat transfer, and protect structures and personnel in buildings, ships, and industrial facilities.

  4. Insulation Jackets: It is used as the outer shell for insulation jackets and covers for hot surfaces, equipment, and piping to provide thermal insulation and personnel protection in industrial plants and refineries.

  5. Gaskets and Seals: Calcium silicate fabric is used for manufacturing high-temperature gaskets, seals, and packings for valves, pumps, and other equipment in chemical processing, oil & gas, and power generation industries.

  6. Welding Protection: It is used as a protective barrier for welding curtains, blankets, and shields to prevent sparks, slag, and spatter from causing damage or injury in welding and metal fabrication operations.

  7. Aerospace and Automotive: Calcium silicate fabric is used in the aerospace and automotive industries for manufacturing heat shields, insulation pads, exhaust wraps, and thermal barriers to protect components and systems from high temperatures and thermal radiation.

Overall, high temperature calcium silicate cloth is a versatile and essential material in various industries where thermal insulation, fire resistance, and durability are critical requirements. Its exceptional heat resistance, thermal insulation properties, and flexibility make it an indispensable component in numerous industrial processes and safety applications.

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