Unique Formulation

Thermalite vacuum-formed shapes are formulated from a blend of high-purity alumina-silica ceramic fibers with an appropriate combination of organic and inorganic binders. Handling strength is provided by the organic binder, while product integrity at high working temperatures is maintained by the inorganic binder. No asbestos, phenolic binders, or exothermics are used. Maximum use temperature for the standard formulation is 2300 F (1260 C). Formulations for use up to 3000 F (1650 C) are also available.

Outstanding Energy-saver

Low thermal conductivity, low heat storage, and excellent insulating properties make Thermalite an important conserver of energy. Superior resistance to thermal shock permits quick heat-ups and cool-downs without cracking or spalling. Non-wetting and high refractoriness characteristics are distinct advantages when in direct contact with nonferrous molten metals.

Rugged Composition

Thermalite shapes resist oxidation, reduction, and attack from most corrosives except hydrofluoric and phosphoric acids and heavy concentration of alkalis. Water or oil will not damage Thermalite shapes and, upon drying, they regain their superior physical properties.

Special Treatments

Thermalite vacuum-formed shapes can be surface-treated on one or both sides, forming an inorganic protective shell for extra strength, or impregnated throughout the entire shape for an almost rock-hard density making them the strongest of all vacuum-formed products, with considerable resistance to mechanical abuse and nonferrous metal contact. All material utilized for impregnation and surface treatment are inorganic and refractory.

Numerous Standard and Special Shapes

Riser sleeves, insulating boards and wet blankets, and furnace combustion chambers are among many standard Thermalite vacuum-formed shapes. However, many special shapes are designed and manufactured to individual specifications.