StudweldPro-UK
The UK leader in Stud Welding and Refractory products
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The UK leader in Stud Welding and Refractory products
Isofrax® Bulk Fibre is a high-performance alkaline earth silicate (AES) wool designed for use in a wide range of high-temperature insulation applications. Manufactured from patented low biopersistent fibre technology, Isofrax Bulk Fibre provides excellent thermal stability, low thermal conductivity and resistance to thermal shock while offering exceptional versatility across industrial processes.
Available in regular and lubricated grades, Isofrax Bulk Fibre is widely used as a loose-fill insulation material, expansion joint packing medium and feedstock for further processing into textiles, papers and specialised insulation products.
Isofrax Bulk Fibre delivers flexible high-temperature insulation performance for a wide variety of industrial applications.
| Property | Isofrax Bulk Fibre |
| Classification Temperature | 1260°C |
| Melting Point | >1500°C |
| Fibre Type | Alkaline Earth Silicate (AES) |
| Colour | White |
| Mean Fibre Diameter | 4 Microns |
| Typical Chemical Analysis (fibre wt. %) | |
| SiO2 | 70.0-80.0 |
| MgO | >18.0-27.0 |
| Trace | <4.0 |
Isofrax Bulk Fibre is used where flexible, lightweight high-temperature insulation materials are required.
Isofrax Bulk Fibre is widely used across high-temperature industrial sectors requiring flexible thermal insulation materials and process feedstocks.
Selecting the correct Isofrax Bulk Fibre grade is essential to achieving optimum thermal performance, processing efficiency and service life. Factors such as operating temperature, fibre grade, packing density and manufacturing requirements should all be considered during specification.
Our technical team provides support across thermal insulation design, fibre processing applications and high-temperature system optimisation, helping ensure the most suitable Isofrax Bulk Fibre solution is specified for your application.
Speak with our technical specialists to discuss loose-fill insulation, expansion joint packing and high-temperature process applications. We can assist with product selection, processing guidance and application-specific specification support.
