The UK leader in Stud Welding and Refractory products
Fiberfrax® Refractory Coatings, Cements and Mastics are a range of high-temperature insulation and repair materials engineered for sealing, surface protection, refractory maintenance and thermal management applications. Manufactured using Fiberfrax ceramic fibres combined with specialist high-temperature binders, these products provide durable, insulating solutions for furnace linings, expansion joints, thermal processing equipment and molten metal handling systems.
Designed for easy application and long-term performance, the range includes mouldable mastics for sealing and repairs, high-temperature refractory mastics for demanding thermal environments and protective coating cements that provide erosion, abrasion and chemical attack resistance. Once cured, these materials form strong insulating structures capable of withstanding severe industrial operating conditions.
Widely specified throughout furnace construction, metals processing, petrochemical production and thermal processing industries, Fiberfrax refractory products provide versatile solutions for installation, maintenance and life extension of high-temperature equipment.
Fiberfrax products combine thermal insulation performance with excellent adhesion, durability and ease of application.
| Property | Mouldable 120 | Mouldable 120HD | Coating 125 | Pump 140 | Mouldable 160 | High Temp Mould 175 |
| Colour | White | Brown | White | White | White | White |
| Use Limit Temperature | 1200°C | 1200°C | 1250°C | 1400°C | 1600°C | 1750°C |
| Product Form | Sticky Putty | Malleable Block | Paint | Putty | Pasty Mastic | Pasty Mastic |
| Wet Density | 1280 kg/m³ | 1500 kg/m³ | 1720 kg/m³ | 1050 kg/m³ | 1500 kg/m³ | 1500 kg/m³ |
| Dry Density | 640 kg/m³ | 900 kg/m³ | 1200 kg/m³ | 300–350 kg/m³ | 1100 kg/m³ | 1100 kg/m³ |
| Primary Application | Sealing & Repairs | Heavy-Duty Repairs | Surface Protection | Pumpable Installation | High-Temperature Repairs | Extreme Temperature Repairs |
Fiberfrax refractory coatings, cements and mastics are used throughout high-temperature industries for installation, maintenance, sealing and refractory protection.
Fiberfrax refractory products are specified across industries requiring high-temperature sealing, repair and refractory protection solutions.
Selecting the correct refractory coating, cement or mastic is essential to achieving optimum sealing performance, refractory life and thermal efficiency. Factors such as operating temperature, substrate material, installation method and environmental conditions should all be considered during specification.
Our technical team provides support across refractory maintenance, furnace repairs and thermal insulation system design, helping ensure the most suitable Fiberfrax solution is specified for your application.
Speak with our technical specialists to discuss refractory maintenance requirements, furnace repairs and high-temperature process applications. We can assist with product selection, installation guidance and application-specific specification support.