Ceramic Fibre Mastic is used to prevent heat loss caused by detoriation of the existing lining and can be installed using a trowel, a caulking gun or a pump. It is a multi-purpose form of ceramic fibre dispersed in a sticky, cohesive binder system that adheres to most ceramic and metallic surfaces.

Typical Applications:

  • To form troughs or liners for non-ferrous metal transfers
  • Gaskets and seals around burner blocks
  • Protection of metallic parts form heat
  • Pump into voids in badly damaged back up insulation
  • Gaskets and seals for chimneys and stacks
  • Boiler door seals and thermal insulation
  • To fill void and cracks in refractory surface


  • Low thermal conductivity
  • Low heat storage,
  • Excellent thermal shock resistance
  • Easy to install
  • Resistance to gas velocity
  • Excellent corrosion resistance
  • Inert to most chemicals
  • Impermeable to molton Aluminium / Zinc / Copper / Lead
  • Contains no Asbestos
  • Ready to use


Typical Physical Properties:

Maximum Service Limit ( °C) : 1200

Density (kgs/m³):

Wet- 1050/1230

Dry- 705/740

Thermal Shrinkage (%) (24hrs @ 1093°C) : 2.8

Thermal Conductivity W/M ²K:

500°F : 0.06

1000°F: 0.12

1500°F: 0.15


Typical Chemical Analysis:

Alumina ( Al2O3): 40-42%

Silica (SiO2): 55-57%

Iron Oxide (Fe2O3): trace