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Item # Kaolite-3300 Kast-Olite 97 LI, Kast-O-Lite 97 Insulating Castable (3300ºF)

Foundry Service & Supplies offers a complete line of high temperature insulating castables (monolithics) rated for use in applications ranging from 2000ºF to 3300ºF. Their light weight and low thermal conductivity reduce both the amount of heat storage and heat transfer producing significant savings in furnace fuel consumption. Lower densities reduce the amount of supporting furnace steelwork required and provide more insulation with a thinner lining. Foundry Service can pre-cast and fire parts and shapes per customer supplied drawings as well.

Specifications  · Cold Crushing Strength  · Modulus of Rupture  · Applications



Calcium Oxide


Density at 1500ºF

92 to 99 lb/ft³
1474 to 1586

Maximum Operating Temperature

3300 ºF

Standard Packaging

50# Bag

Cold Crushing Strength

Cold Crushing Strength (Dried 18-24 hrs. at 220ºF [104ºC])

2000 to 3500 psi
13.8 to 24.1

Cold Crushing Strength (Fired 5 hrs. at 1500ºF [816ºC])

1800 to 3400 psi
12.4 to 23.4

Cold Crushing Strength (Fired 5 hrs. at Use Limit)

3000 to 4000 psi
20.7 to 27.6

Modulus of Rupture

Modulus of Rupture (Dried 18-24 hrs. at 220ºF [104ºC])

800 to 1200 psi
5.52 to 8.27

Modulus of Rupture (Fired 5 hrs. at 1500ºF [816ºC])

700 to 1050 psi
4.8 to 7.24

Modulus of Rupture (Fired 5 hrs. at Use Limit)

1000 to 1850 psi
6.9 to 12.8

Backup insulation in two component linings in petrochemical process units, hot face lining in ductwork from waste heat recovery boilers and process units, hydrogen or reducing atmosphere linings, radiant sections in steam flood generators, steam flood generator convection sections and target walls, cat cracker regenerator linings, petrochemical applications, flue and duct linings, backup for hearths, car tops, and arches, heat treating, annealing, and stress-relieving furnaces.


Data Sheet for Kast-O-Lite 97 Insulating Castable (3300ºF)
(PDF, 102KB)

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Foundry Service & Supplies, Inc. | Heat And Corrosion Resistant Industrial Insulation & Construction Materials