Loose ceramic fiber bulk for filling, vacuum-formed shapes manufacturing, and custom insulation applications.
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.
Ceramic fiber bulk is the loose, un-bonded fibre form of ceramic fibre — the raw material for modules, vacuum-formed shapes and castable reinforcement, and a practical fill for cavities and complex voids.
| Property | Value |
|---|---|
| Maximum service temperature | classification 1260°C; service up to 1100°C |
| Density | 60–200 kg/m³ (loose, as packed) |
| Thermal conductivity | 0.05–0.12 W/(m·K) (as loose fill) |
| Standard thickness | loose / chopped fibre |
| Standard dimensions | compressed bales or bags |
| Fire classification | Non-combustible (ceramic fibre, asbestos-free) |
| Composition | high-purity alumino-silicate (Al₂O₃ + SiO₂) blown fibre, no organic binder |
| Standards | ASTM C892, ASTM C1086, ISO 10635, EN 10964 |
Place loosely without over-compression to keep the insulating air fraction; for casting, blend the chopped fibre evenly into the matrix.
Manufactured to ASTM C892, ASTM C1086, ISO 10635, EN 10964 and controlled under a documented quality system. Supplied by a manufacturer holding ISO 9001, CE and SGS certifications, exporting high-temperature insulation to 60+ countries since 1982.
Combines stable high-temperature performance with straightforward on-site fabrication. The material is asbestos-free, chemically stable in neutral and oxidising atmospheres, and supplied with full technical data sheets to support specification and inspection. Supplied by a manufacturer holding ISO 9001, CE and SGS certifications, exporting high-temperature insulation to 60+ countries since 1982.
Rosetexwool is a ceramic fiber bulk (loose wool) manufacturer and supplier serving more than 60 countries since 1982. Every ceramic fiber bulk (loose wool) is produced under a documented quality system certified to ISO 9001, CE and SGS, with batch-level traceability from raw material to finished product.
What our manufacturing capability covers:
For quotations, lead times or technical data sheets, contact our team with your specification and target service temperature. Explore the ceramic fiber insulation hub for the full range, or read the ceramic fiber insulation buying guide for selection support.
ceramic fiber blanket — Needled refractory blanket rated 1100–1430 °C with very low thermal conductivity and the thermal shock resistance that rapid furnace cycling demands.
ceramic fiber board — Rigid refractory board to 1430 °C in several densities and grades, cuttable with ordinary tools and stable enough to hold tight tolerances in place.
calcium silicate pipe sections — Built for industrial steam and high-temperature process piping where the insulation has to survive thermal cycling and still be removable for inspection.
For the full ceramic fiber range, temperature grades and density options, see our ceramic fiber insulation guide.
For adjacent material options across temperature and application ranges, explore our rock wool insulation hub.
Part of the Ceramic Fiber product family.
Last updated: September 19, 2026
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.
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.
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.
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.
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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Refractory ceramic fiber blanket, also marketed as ceramic fire blanket — Class A non-combustible insulation rated 1100–1430°C. Ceramic blanket insulation for furnaces, boilers, kilns & pipe wrap.
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