Rosetexwool  Insulation Refractory Co., Ltd.
Ceramic Fiber Bulk
Ceramic Fiber

Ceramic Fiber Bulk

Loose ceramic fiber bulk for filling, vacuum-formed shapes manufacturing, and custom insulation applications.

Form
Loose cotton / Bulk fiber
Temperature
1100-1430℃
Fiber Diameter
2-4 μm
Asbestos
100% Non-Asbestos

Overview

  • Excellent thermal insulation
  • Low thermal conductivity
  • Good thermal shock resistance
  • Multiple temperature grades

Raw form of ceramic fiber produced through melting and fiberizing. Used as base material for manufacturing other ceramic fiber products and as loose-fill insulation for complex spaces and cavities.

Part of the Ceramic Fiber product family.

Key features

  • Excellent thermal insulation
  • Low thermal conductivity
  • Good thermal shock resistance
  • Multiple temperature grades
  • 100% inorganic, non-combustible
  • Easy to pack irregular spaces

Typical applications

  • Raw material for vacuum-formed products
  • Loose fill furnace insulation
  • Expansion joint filling
  • Ceramic fiber textile manufacturing

Technical specs

Form
Loose cotton / Bulk fiber
Temperature
1100-1430℃
Fiber Diameter
2-4 μm
Asbestos
100% Non-Asbestos

Last updated: August 13, 2026

Frequently asked

What temperature can ceramic fiber insulation withstand? +

Ceramic fiber insulation withstands temperatures from 1100°C to 1430°C, depending on the grade. Standard (ST) and High-Purity (HP) grades are rated for 1260°C, while High-Alumina (HA) handles 1360°C and Zirconia (HZ) reaches 1430°C. Always match the grade to your specific operating temperature.

What are the differences between COM, ST, HP, HA, and HZ grades? +

The grades differ mainly in alumina (Al₂O₃) content and temperature rating. COM (1100°C) is the economy grade. ST (1260°C) is the standard industrial grade. HP (1260°C) offers higher purity with lower shot content. HA (1360°C) has higher alumina for superior thermal stability. HZ (1430°C) contains zirconia for the highest temperature resistance.

Is ceramic fiber insulation safe? +

Yes. Our ceramic fiber products are 100% asbestos-free and manufactured to international safety standards. They are classified as non-carcinogenic under EU Directive 97/69/EC. We recommend standard PPE (gloves, dust mask) during handling, as with any fibrous insulation material.

How is ceramic fiber blanket installed? +

Ceramic fiber blanket can be cut to size with a utility knife and secured using high-temperature anchors, pins, or stud welding. For furnace linings, a layered installation is recommended. For pipe insulation, wrap and secure with stainless steel bands. Full installation guidance and technical support are provided with every order.

What are the typical applications for ceramic fiber products? +

Ceramic fiber is widely used in industrial furnaces, kilns, boilers, petrochemical heaters, power generation equipment, incinerators, and building fire protection systems. It is ideal for backup insulation, expansion joints, door seals, and high-temperature gaskets.

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