Insulation Refractories (CUMILAG®)

CUMILAG insulation exhibit unique combination of chemical, mechanical stability and insulating properties. They are suitable for applications at service temperatures ranging from 1250°C to 1850°C. Bubble alumina range of insulating refractories are of light weight, have good load bearing capacity, and low heat capacity. They can be directly exposed to flame, and combustion products.

Outstanding Features

  • Very high refractoriness, structural strength
  • Low thermal conductivity, shrinkage and creep
  • High resistance to reducing atmosphere
  • Uniform pore size and distribution
User Industries Application

Ceramic, Metallurgical

High temperature kiln hot face & backup lining

Carbon black

Back up lining


Primary reformer and hydrogen transfer lines back up, Secondary reformer cold face

Iron & Steel

Blast furnace stoves

Power generation

High temperature air pre-heaters


Products / Industry

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New Products / Applications


Carborundum Universal Murugappa Group