The UK leader in Stud Welding and Refractory products
Insulfrax® Mouldable are high-performance insulation materials composed of Insulfrax alkaline earth silicate wool dispersed in high-temperature binders. Upon drying, these mastics form a strong insulating structure with low thermal conductivity. They can be caulked, trowelled, pumped, or moulded quickly and easily, making them ideal for filling, sealing, repair, and general packing applications in industrial furnaces and process equipment.
Engineered for low thermal conductivity, resistance to thermal shock, low shrinkage, and excellent adhesion, Insulfrax Mouldable provides reliable performance while simplifying installation and maintenance processes.
Insulfrax Mastics offer durable, energy-efficient insulation solutions for high-temperature applications.
| Property | Mouldable |
| Use Limit Temperature | 1100°C |
| Product Form | Sticky Putty |
| Wet Density (kg/m³) | 1200 |
| Dry Density (kg/m³) | 600 |
| Application Method | Trowel, Mould, Caulk |
| Typical Uses | Component moulding, repair, coating |
Insulfrax Mastics are suitable wherever insulating, sealing, or repairing high-temperature fibre linings is required:
Insulfrax Mastics are widely used across diverse high-temperature industrial sectors and demanding thermal processing applications:
Selecting the correct Insulfrax Mastic is essential to achieving optimum sealing performance, thermal efficiency and service life. Factors such as operating temperature, joint design, substrate type and application requirements should all be considered during specification.
Our technical team provides support across high-temperature insulation systems, refractory maintenance and thermal process applications, helping ensure the most suitable Insulfrax Mastic solution is specified for your operating conditions.
Speak with our technical specialists to discuss sealing requirements, refractory repairs and high-temperature insulation applications. We can assist with product selection, application guidance and specification support to help maximise thermal performance and operational reliability.