Our Products

Insulators, Mineral Wool, Glass Wool & Insulation Materials 3 Products available
Fire Bricks
1 Products available
- SILRATH ANDALUSITE HIGH-ALUMINA BRICKS
Construction Machines
1 Products available
- RATHLOC MORTAR-FREE KILN CAR REFRACTORY SYSTEM
Bricks
1 Products available
- KORRATH HIGH-TEMPERATURE CORUNDUM BRICKS
Floor Mats
1 Products available
- ALTRA POLYCRYSTALLINE ALUMINA FIBER MAT
Others Products 2 Products available
- PORRATH HIGH-TEMPERATURE INSULATING FIREBRICK
- ALTRA KVS HIGH-TEMPERATURE

Our Products

Our Complete range of products are PORRATH HIGH-TEMPERATURE INSULATING FIREBRICK and ALTRA KVS HIGH-TEMPERATURE.

RATHLOC MORTAR-FREE KILN CAR REFRACTORY SYSTEM

Properties Units
Classification Temperature °F °C
Density lbs/ft³ (kg/m³)

Button and dimple system interlock layersMortar-freeHydraulically-pressed, high-fired brickGrades available for load-bearing or insulating layersDesigns for applications up to 1800COne set of molds in USA and identical set in Austria

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High Density Vacuum-formed Board

Properties Units
Classification Temperature °F °C
Service Temperature °F °C

ALTRA KVS AND KVR HIGH-DENSITY VACUUM-FORMED BOARDSALTRA high-density vacuum-formed board products are available in formulations for service temperatures up to 1800C. ALTRA high-density boards are available for high-temperature, oxidizing environments (KVS) and high-temperature, reducing environments (KVR). ALTRA boards are formed from alumina or mullite polycrystalline fibers with appropriate inorganic and organic binders. All grades are pre-fired to 1000C or greater, resulting in an organic-free composition. Possible applications include furnace hearth plates and low mass sintering setters.

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ALTRA KERASETTER ULTRA HIGH-DENSITY

Properties Units
Classification Temperature °F °C
Service Temperature °F °C

ALTRA KERASETTER ULTRA HIGH-DENSITY VACUUM-FORMED BOARDSALTRA KERASETTER machinable board products are available in formulations for service temperatures up to 1700C. ALTRA KERASETTER boards are available for high-temperature, oxidizing environments (KVS) or high-temperature, reducing environments (KVR). ALTRA boards are formed from alumina or mullite polycrystalline fibers with appropriate inorganic and organic binders. All grades are pre-fired to 1000C or greater, resulting in an organic-free composition. Possible applications include low mass sintering setters.

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Ceramic Fiber Modules

Standard 12" x 12"
Giant 2" x 24", 12" x 36", 12" x 48"

Rath manufactures a complete line of custom stack bonded modules using the highest purity alumino-silicate, alumino-zirconia-silicate, and ALTRA high-alumina fibers for application temperatures between 2000F and 3000F. Rath's interactive engineering approach allows us to work closely with the customer to select the appropriate materials, densities, thickness, and anchors for the application. Our field service engineers can provide heat flow analysis, installation supervision, or a turnkey retrofit of an existing furnace.

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PORRATH HIGH-TEMPERATURE INSULATING FIREBRICK

Density lbs/ft³ (kg/m³)
Properties Units
Classification Temperature °C (°F)

PORRATH high-temperature insulating firebricks are available in ASTM Group 26 through 34 classifications and are manufactured with the highest quality raw materials and high firing temperatures. PORRATH IFB feature low thermal conductivity, excellent thermal shock resistance, high-purity, low iron oxide content, and good mechanical properties. PORRATH IFB exhibit excellent resistance to corrosive andor reducing atmospheres. PORRATH is available in standard brick sizes (straights, arches, and wedges), as well as custom shapes.

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SILRATH ANDALUSITE HIGH-ALUMINA BRICKS

Properties Units
Density lbs/ft³ (g/cm³)
Apparent Porosity %

SILRATH andalusite base bricks are dense, high-alumina bricks with very low flux levels and relatively low porosity. SILRATH bricks are characterized by excellent high-temperature load resistance and outstanding thermal shock resistance. This exceptional resistance to thermal shock allows these brick to withstand repeated cycles of up to 120 times from a hot furnace to a cold bath.

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KORRATH HIGH-TEMPERATURE CORUNDUM BRICKS

Properties Units
Density lbs/ft³ (g/cm³)
Apparent Porosity %

KORRATH HIGH-TEMPERATURE CORUNDUM BRICKSKORRATH grades are corundum, tabular alumina, mullite and zirconia-based with high-density, high-purity, low porosity, and good-to-excellent thermal shock resistance. KORRATH is available in standard brick sizes (straights, arches, and wedges), as well as custom plates and shapes.Properties

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ALTRA KVS HIGH-TEMPERATURE

Properties Units
Classification Temperature °F °C
Service Temperature °F °C

ALTRA KVS HIGH-TEMPERATURE VACUUM-FORMED CYLINDERSALTRA KVS high-temperature vacuum-formed cylinders are available in formulations for service temperatures up to 1800C. ALTRA KVS cylinders feature low thermal conductivity, excellent thermal shock resistance, high-purity, and good density uniformity. ALTRA KVS is formed from alumina andor alumino-silicate fibers with appropriate inorganic and organic binders. ALTRA KVS products are available in two forms: pre-fired to 1000C resulting in an organic-free, smoke-free composition or with an organic binder (dried only, no pre-firing) for increased room temperature strength.Properties

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ALTRA POLYCRYSTALLINE ALUMINA FIBER MAT

Properties ALTRA® MAT 72
Typical Composition > 71 < 28 < 0.1 < 0.2

ALTRA alumina fiber mats are high-purity, low shot content polycrystalline materials for refractory insulation applications up to 1650C (3000F). ALTRA fibers are manufactured via a sol-gel solution process to control fiber diameter and non-fibrous shot content. Controlled firing yields the optimal crystalline phase for maximum resistance to thermal shrinkage at elevated temperatures. Two grades are available for a broad range of applications.

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