Refractory

Insulation Bricks

Insulation bricks are commonly used in electric and gas kilns where there is minimal abrasion against the lining of the kiln. This is due to the bricks being lightweight and not very dense. 23Grade bricks can withstand a maximum service temperature of 2300 degrees Farenheit, 26GD, 2600 degrees and 28GD, 2800 degrees. They can either see the hot face of the kiln or be used behind another layer as insulation.

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