LyTherm® Premium Grade Paper is a lightweight refractory material processed from highly washed, spun, high purity alumina silica fibers formed into a highly flexible sheet. It is recommended for continuous use at temperatures up to 2300°F(1260°C) in applications requiring high handling strength, resiliciency, and excellent thermal properties.
Because it is formulated with a low content of unfiberized particles, LyTherm® Premium Grade Paper offers extremely low thermal conductivity and a dust-free surface. It was designed specifically for applications where low shot content, compression recovery, low thermal conductivity, and minimum shrinkage are of critical importance.
LyTherm® Premium Grade Paper contains an organic binder to provide increased handling strength at room temperature. It possesses excellent chemical stability and resists attack from most corrosive agents. Exceptions are hydrofluoric and phosphoric acids and concentrated alkalis. Because of its high-purity chemistry LyTherm® Premium Grade Paper resists both oxidation and reduction. If it becomes wet due to water, steam, or oil, its thermal and physical properties will return upon drying.
Features/Advantages:
Easy to cut wrap or form
Temperature stability
Low thermal conductivity
Low heat storage
Resilient
Light Weight
Thermal shock resistant
High heat reflectance
Good dielectric strength
Excellent compression recovery
Applications:
High efficiency thermal barrier
Backup lining for metal troughs
High temperature gaskets
Hot top linings
Thermal and electrical insulation
Coke oven door shock absorption medium
Induction furnace coil separator

LyTherm® 1535-GC Abrasion Resistance Paper is a lightweight refractory composite composed of an inner core of spun, high purity alumina-silica paper quilted with a durable textile cladding. The core material is recommended for continuous use at temperatures up to 2300ºF (1260ºC), and will remain intact even if the 1200ºF (650ºC) textile cladding burns away.
LyTherm® 1535-GC is designed for use in applications where abrasion resistance, thermal shock, high strength, and compression resistance are important. LyTherm® 1535-GC was also the first insulation backup material specifically designed for rotary kiln applications. Previous attempts to use papers as refractory backup in rotary kilns failed because the product lacked sufficient integrity to withstand the compressive stresses applied as the kiln rotates. LyTherm® 1535-GC Paper is designed to not only withstands these stresses but to insulate effectively against the costly heat loss associated with rotary kiln operation. LyTherm® 1535-GC Paper is completely immune to thermal shock and also absorbs the mechanical stress caused by rapid temperature changes in the outside environment, thus increasing the life of the refractory. This efficient insulation also minimizes the thermal gradient in hard refractories and allows the lining to wear thinner before a retrofit is necessary.
LyTherm® 1535-GC is firm yet resilient which allows it to conform to irregular surfaces found some older kilns, and makes it extremely easy to install.
Features/Advantages:
Easy to cut wrap or form
Temperature stability
Low thermal conductivity
Low heat storage
Resilient
Light Weight
Thermal shock resistant
Good dielectric strength
High fired tensile strength
Good flame resistance

LyTherm® 3000-L alumina paper is a lightweight refractory material processed from high purity bulk alumina fibers formed into a flexible sheet. It is recommended for continuous use at temperatures up to 3000°F (1650°C), in applications that demand low shrinkage, a high degree of thermal stability, and temperature protection up to 3000°F (1650°C).
LyTherm® 3000-L is designed specifically for use in high temperature heat treating, ceramic kilns, and in aerospace insulation composites.
LyTherm® 3000-L Alumina Paper contains an organic binder to provide increased handling strength at room temperature. It possesses excellent chemical stability and resists both oxidation and reduction, even in the presence of hydrogen at high temperatures. If it becomes wet due to water, steam, or oil, its thermal and physical properties will return upon drying.

LyTherm® 3000-LH paper does not contain organic binders, which must be subsequently burned off, and is manufactured using a patented process that provides high tensile handling strength.
3000-LH Papers are designed specifically for use in high temperature heat treating of alloys, ceramics, and powered metals, where silica contamination, excessive shrinkage, and surface cleanliness are problems. 3000-LH Papers can be cut and handled without tearing and have a clean dust-free surface, which eliminates metal pitting. Their binderless formulation prevents carbon pick up and surface discoloration.
LyTherm® 3000-LH Binderless Paper possesses excellent chemical stability and resists attack from most corrosive agents. Exceptions are hydrofluoric and phosphoric acids and concentrated alkalis. Because of its high purity chemistry, LyTherm® 3000-LH Paper resists both oxidation and reduction.

LyTherm® 3000-LH paper does not contain organic binders, which must be subsequently burned off, and is manufactured using a patented process that provides high tensile handling strength.
3000-LH Papers are designed specifically for use in high temperature heat treating of alloys, ceramics, and powered metals, where silica contamination, excessive shrinkage, and surface cleanliness are problems. 3000-LH Papers can be cut and handled without tearing and have a clean dust-free surface, which eliminates metal pitting. Their binderless formulation prevents carbon pick up and surface discoloration.
LyTherm® 3000-LH Binderless Paper possesses excellent chemical stability and resists attack from most corrosive agents. Exceptions are hydrofluoric and phosphoric acids and concentrated alkalis. Because of its high purity chemistry, LyTherm® 3000-LH Paper resists both oxidation and reduction.

LyTherm® 550-L Utility Grade Paper is processed from unwashed spun, high purity alumina-silica fibers formed into a highly flexible sheet. It is recommended for continuous use at temperatures up to 2300°F (1260 C) in applications where insulating efficiency is not critical. LyTherm® 550-L is designed for use primarily in applications where thermal stability and high temperature protection up to 2300°F (1260°C) are most important, such as high temperature parting plane in refractory linings or as an expansion joint.
LyTherm® 550-L Utility Paper contains organic binder to provide increased handling strength at room temperature. It possesses excellent chemical stability and resists attack from corrosive agents. Exceptions are hydrophilic and phosphoric acids and concentrated alkalis. Because of its high-purity chemistry, LyTherm® 550-L Utility Paper resists both oxidation and reduction. If it becomes wet due to water, steam or oil, its thermal and physical properties will return upon drying.
Features/Advantages:
Easy to cut wrap or form
Temperature stability
Low thermal conductivity
Low heat storage
Resilient
Light Weight
Thermal shock resistant
High heat reflectance
Good dielectric strength
Excellent corrosion resistance
Applications:
Parting plane in refractory linings
Combustion chamber liners
Backup lining for metal troughs
Hot top linings
Thermal and electrical insulation
Coke oven door shock absorption
medium
Kiln car deck covering

LyTherm® 550-L Utility Grade Paper is processed from unwashed spun, high purity alumina-silica fibers formed into a highly flexible sheet. It is recommended for continuous use at temperatures up to 2300°F (1260 C) in applications where insulating efficiency is not critical. LyTherm® 550-L is designed for use primarily in applications where thermal stability and high temperature protection up to 2300°F (1260°C) are most important, such as high temperature parting plane in refractory linings or as an expansion joint.
LyTherm® 550-L Utility Paper contains organic binder to provide increased handling strength at room temperature. It possesses excellent chemical stability and resists attack from corrosive agents. Exceptions are hydrophilic and phosphoric acids and concentrated alkalis. Because of its high-purity chemistry, LyTherm® 550-L Utility Paper resists both oxidation and reduction. If it becomes wet due to water, steam or oil, its thermal and physical properties will return upon drying.
Features/Advantages:
Easy to cut wrap or form
Temperature stability
Low thermal conductivity
Low heat storage
Resilient
Light Weight
Thermal shock resistant
High heat reflectance
Good dielectric strength
Excellent corrosion resistance
Applications:
Parting plane in refractory linings
Combustion chamber liners
Backup lining for metal troughs
Hot top linings
Thermal and electrical insulation
Coke oven door shock absorption
medium
Kiln car deck covering

LyTherm® 880-LH Binderless Grade Paper is a 100% inorganic material processed from washed, spun, high purity alumina-silica fibers. It is recommended for continuous use at temperatures up to 2600°F (1427°C) in applications where off-gassing of the organic binder cannot be tolerated. LyTherm® 880-LH Paper is manufactured using a patented process that provides high tensile handling strength. Because it is processed from higher alumina content fibers, LyTherm® 880-LH Paper has a higher use temperature, is less chemically reactive, and has lower thermal shrinkage. It is a clean, low shot content paper with extremely low thermal conductivity.
880-LH Papers are engineered primarily for applications in the heat treat industry above 2300ºF, where silica contamination, shrinkage, and tensile strength are problems. 880-LH Papers can be cut and handled without tearing, have a clean dust-free surface which eliminates metal pitting, and their binderless formulation prevents carbon pick up and surface discoloration.
LyTherm® 880-LH Binderless Paper possesses excellent chemical stability and resists attack from most corrosive agents. Exceptions are hydrofluoric and phosphoric acids and concentrated alkalies.
Features/Advantages:
Easy to cut, wrap or form
Temperature stability
Low thermal conductivity
Low heat storage
Resilient and Flexible
Light Weight
Thermal shock resistant
Good dielectric strength
High fired tensile strength
Good flame resistance
Applications:
Vacuum Heat Treat applications above 2300ºF
Powdered metal sintering
Tray and basket liner
Separating media to prevent sticking
Military, aerospace, nuclear, and medical industries
Parting agent in brazing, heat treating, and metal forming processes
Applications requiring low silica content

LyTherm® 880-LH Binderless Grade Paper is a 100% inorganic material processed from washed, spun, high purity alumina-silica fibers. It is recommended for continuous use at temperatures up to 2600°F (1427°C) in applications where off-gassing of the organic binder cannot be tolerated. LyTherm® 880-LH Paper is manufactured using a patented process that provides high tensile handling strength. Because it is processed from higher alumina content fibers, LyTherm® 880-LH Paper has a higher use temperature, is less chemically reactive, and has lower thermal shrinkage. It is a clean, low shot content paper with extremely low thermal conductivity.
880-LH Papers are engineered primarily for applications in the heat treat industry above 2300ºF, where silica contamination, shrinkage, and tensile strength are problems. 880-LH Papers can be cut and handled without tearing, have a clean dust-free surface which eliminates metal pitting, and their binderless formulation prevents carbon pick up and surface discoloration.
LyTherm® 880-LH Binderless Paper possesses excellent chemical stability and resists attack from most corrosive agents. Exceptions are hydrofluoric and phosphoric acids and concentrated alkalies.
Features/Advantages:
Easy to cut, wrap or form
Temperature stability
Low thermal conductivity
Low heat storage
Resilient and Flexible
Light Weight
Thermal shock resistant
Good dielectric strength
High fired tensile strength
Good flame resistance
Applications:
Vacuum Heat Treat applications above 2300ºF
Powdered metal sintering
Tray and basket liner
Separating media to prevent sticking
Military, aerospace, nuclear, and medical industries
Parting agent in brazing, heat treating, and metal forming processes
Applications requiring low silica content

LyTherm® 880-LH Binderless Grade Paper is a 100% inorganic material processed from washed, spun, high purity alumina-silica fibers. It is recommended for continuous use at temperatures up to 2600°F (1427°C) in applications where off-gassing of the organic binder cannot be tolerated. LyTherm® 880-LH Paper is manufactured using a patented process that provides high tensile handling strength. Because it is processed from higher alumina content fibers, LyTherm® 880-LH Paper has a higher use temperature, is less chemically reactive, and has lower thermal shrinkage. It is a clean, low shot content paper with extremely low thermal conductivity.
880-LH Papers are engineered primarily for applications in the heat treat industry above 2300ºF, where silica contamination, shrinkage, and tensile strength are problems. 880-LH Papers can be cut and handled without tearing, have a clean dust-free surface which eliminates metal pitting, and their binderless formulation prevents carbon pick up and surface discoloration.
LyTherm® 880-LH Binderless Paper possesses excellent chemical stability and resists attack from most corrosive agents. Exceptions are hydrofluoric and phosphoric acids and concentrated alkalies.
Features/Advantages:
Easy to cut, wrap or form
Temperature stability
Low thermal conductivity
Low heat storage
Resilient and Flexible
Light Weight
Thermal shock resistant
Good dielectric strength
High fired tensile strength
Good flame resistance
Applications:
Vacuum Heat Treat applications above 2300ºF
Powdered metal sintering
Tray and basket liner
Separating media to prevent sticking
Military, aerospace, nuclear, and medical industries
Parting agent in brazing, heat treating, and metal forming processes
Applications requiring low silica content

LyTherm® 970-L Commercial grade paper is processed from washed, spun, high purity alumina-silica fibers formed into a highly flexible sheet. It is recommended for continuous use at temperatures up to 2300° F (1260° C) in applications where insulating efficiency and high strength are important.
Because it is processed from washed fiber, LyTherm® 970-L paper is clean, has low shot content, and offers low thermal conductivity. It’s highly uniform structure assures homogeneous thermal conductivity throughout, and its high tensile strength makes it ideal as a gasket, seal, or spacer material.
LyTherm® 970-L Commercial Paper contains an organic binder to provide increased handling strength at room temperature. It possesses excellent chemical stability and resists attack from most corrosive agents. Exceptions are hydrofluoric and phosphoric acids and concentrated alkalis. Because of its high-purity chemistry, LyTherm® 970-L Commercial paper resists both oxidation and reduction. If it becomes wet due to water, steam, or oil, its thermal and physical properties will return upon drying.
Features/Advantages:
Easy to cut wrap or form
Temperature stability
Low thermal conductivity
Low heat storage
Resilient
Light Weight
Thermal shock resistant
High heat reflectance
Good dielectric strength
Excellent corrosion resistance
Applications:
Parting plane in refractory linings
Combustion chamber liners
Backup lining for metal troughs
Hot top linings
Thermal and electrical insulation
Refractory backup insulation
Coke oven door shock absorption medium
Kiln car deck covering

LyTherm® 970-LH Binderless Grade Paper is a 100% inorganic material, and is manufactured using a patented process that provides high tensile handling strength. Because it is processed from washed, spun, high purity alumina-silica fibers, LyTherm® 970-LH Paper is clean, has low shot content and offers low thermal conductivity. It is recommended for continuous use at temperatures up to 2300°F (1260°C) in applications where off-gassing of the organic binder cannot be tolerated.
970-LH Papers are engineered primarily for applications in the heat treat industry, where its high strength allows it to be cut and handled without tearing, its low shot content eliminates metal pitting, and its binderless formulation prevents carbon pick up and surface discoloration. Because it contains no organic binders, 970-LH Paper does not off-gas or release carbon particles into the furnace environment. When used as a separator, 970-LH Paper prevents parts from sticking, and reduces contamination pick up from metal trays, or allows the use of lower cost graphite hearth plates. LyTherm® 970-LH Binderless Paper possesses excellent chemical stability and resists attack from most corrosive agents. Because of its high purity chemistry, LyTherm® 970-LH Paper resists both oxidation and reduction.
Features/Advantages:
Easy to cut, wrap or form
Temperature stability
Low thermal conductivity
Low heat storage
Resilient and Flexible
Light Weight
Thermal shock resistant
Good dielectric strength
High fired tensile strength
Good flame resistance
Applications:
Vacuum Heat Treat applications above 2300ºF
Powdered metal sintering
Tray and basket liner
Separating media to prevent sticking
Military, aerospace, nuclear, and medical industries
Parting agent in brazing, heat treating, and metal forming processes
Applications requiring low silica content

LyTherm® 970-L Commercial grade paper is processed from washed, spun, high purity alumina-silica fibers formed into a highly flexible sheet. It is recommended for continuous use at temperatures up to 2300° F (1260° C) in applications where insulating efficiency and high strength are important.
Because it is processed from washed fiber, LyTherm® 970-L paper is clean, has low shot content, and offers low thermal conductivity. It’s highly uniform structure assures homogeneous thermal conductivity throughout, and its high tensile strength makes it ideal as a gasket, seal, or spacer material.
LyTherm® 970-L Commercial Paper contains an organic binder to provide increased handling strength at room temperature. It possesses excellent chemical stability and resists attack from most corrosive agents. Exceptions are hydrofluoric and phosphoric acids and concentrated alkalis. Because of its high-purity chemistry, LyTherm® 970-L Commercial paper resists both oxidation and reduction. If it becomes wet due to water, steam, or oil, its thermal and physical properties will return upon drying.
Features/Advantages:
Easy to cut wrap or form
Temperature stability
Low thermal conductivity
Low heat storage
Resilient
Light Weight
Thermal shock resistant
High heat reflectance
Good dielectric strength
Excellent corrosion resistance
Applications:
Parting plane in refractory linings
Combustion chamber liners
Backup lining for metal troughs
Hot top linings
Thermal and electrical insulation
Refractory backup insulation
Coke oven door shock absorption medium
Kiln car deck covering

LyTherm® 970-LH Binderless Grade Paper is a 100% inorganic material, and is manufactured using a patented process that provides high tensile handling strength. Because it is processed from washed, spun, high purity alumina-silica fibers, LyTherm® 970-LH Paper is clean, has low shot content and offers low thermal conductivity. It is recommended for continuous use at temperatures up to 2300°F (1260°C) in applications where off-gassing of the organic binder cannot be tolerated.
970-LH Papers are engineered primarily for applications in the heat treat industry, where its high strength allows it to be cut and handled without tearing, its low shot content eliminates metal pitting, and its binderless formulation prevents carbon pick up and surface discoloration. Because it contains no organic binders, 970-LH Paper does not off-gas or release carbon particles into the furnace environment. When used as a separator, 970-LH Paper prevents parts from sticking, and reduces contamination pick up from metal trays, or allows the use of lower cost graphite hearth plates. LyTherm® 970-LH Binderless Paper possesses excellent chemical stability and resists attack from most corrosive agents. Because of its high purity chemistry, LyTherm® 970-LH Paper resists both oxidation and reduction.
Features/Advantages:
Easy to cut, wrap or form
Temperature stability
Low thermal conductivity
Low heat storage
Resilient and Flexible
Light Weight
Thermal shock resistant
Good dielectric strength
High fired tensile strength
Good flame resistance
Applications:
Vacuum Heat Treat applications above 2300ºF
Powdered metal sintering
Tray and basket liner
Separating media to prevent sticking
Military, aerospace, nuclear, and medical industries
Parting agent in brazing, heat treating, and metal forming processes
Applications requiring low silica content

LyTherm® 970-L Commercial grade paper is processed from washed, spun, high purity alumina-silica fibers formed into a highly flexible sheet. It is recommended for continuous use at temperatures up to 2300° F (1260° C) in applications where insulating efficiency and high strength are important.
Because it is processed from washed fiber, LyTherm® 970-L paper is clean, has low shot content, and offers low thermal conductivity. It’s highly uniform structure assures homogeneous thermal conductivity throughout, and its high tensile strength makes it ideal as a gasket, seal, or spacer material.
LyTherm® 970-L Commercial Paper contains an organic binder to provide increased handling strength at room temperature. It possesses excellent chemical stability and resists attack from most corrosive agents. Exceptions are hydrofluoric and phosphoric acids and concentrated alkalis. Because of its high-purity chemistry, LyTherm® 970-L Commercial paper resists both oxidation and reduction. If it becomes wet due to water, steam, or oil, its thermal and physical properties will return upon drying.
Features/Advantages:
Easy to cut wrap or form
Temperature stability
Low thermal conductivity
Low heat storage
Resilient
Light Weight
Thermal shock resistant
High heat reflectance
Good dielectric strength
Excellent corrosion resistance
Applications:
Parting plane in refractory linings
Combustion chamber liners
Backup lining for metal troughs
Hot top linings
Thermal and electrical insulation
Refractory backup insulation
Coke oven door shock absorption medium
Kiln car deck covering

LyTherm® 970-LH Binderless Grade Paper is a 100% inorganic material, and is manufactured using a patented process that provides high tensile handling strength. Because it is processed from washed, spun, high purity alumina-silica fibers, LyTherm® 970-LH Paper is clean, has low shot content and offers low thermal conductivity. It is recommended for continuous use at temperatures up to 2300°F (1260°C) in applications where off-gassing of the organic binder cannot be tolerated.
970-LH Papers are engineered primarily for applications in the heat treat industry, where its high strength allows it to be cut and handled without tearing, its low shot content eliminates metal pitting, and its binderless formulation prevents carbon pick up and surface discoloration. Because it contains no organic binders, 970-LH Paper does not off-gas or release carbon particles into the furnace environment. When used as a separator, 970-LH Paper prevents parts from sticking, and reduces contamination pick up from metal trays, or allows the use of lower cost graphite hearth plates. LyTherm® 970-LH Binderless Paper possesses excellent chemical stability and resists attack from most corrosive agents. Because of its high purity chemistry, LyTherm® 970-LH Paper resists both oxidation and reduction.
Features/Advantages:
Easy to cut, wrap or form
Temperature stability
Low thermal conductivity
Low heat storage
Resilient and Flexible
Light Weight
Thermal shock resistant
Good dielectric strength
High fired tensile strength
Good flame resistance
Applications:
Vacuum Heat Treat applications above 2300ºF
Powdered metal sintering
Tray and basket liner
Separating media to prevent sticking
Military, aerospace, nuclear, and medical industries
Parting agent in brazing, heat treating, and metal forming processes
Applications requiring low silica content

LyTherm® LDF PAPER is a lightweight insulating material composed of large diameter, inorganic, high temperature fibers processed into a highly flexible sheet. It is recommended for intermittent use at temperatures up to 1500°F (815°C) with a continuous use of 1400°F (760°C), in applications requiring an alternative to man-made vitreous blown or spun fiber products.

LyTherm® LDF PAPER contains no shot or unfiberized particles, which results in an extremely clean paper with very low thermal conductivity and a smooth, homogenous surface. LyTherm® LDF PAPER was designed specifically for use in the appliance, automotive, and consumer equipment industries where these ceramic-free papers offer the advantages of high insulating efficiency, a clean shot-free surface, and less irritation during handling.

LyTherm® LDF PAPER contains an organic binder to provide increased handling strength at room temperature. It possesses good chemical stability and resists attack from most corrosive agents. If it becomes wet due to water, steam, or oil, its thermal and physical properties will return upon drying.

LyTherm® Rollboard Paper is a lightweight refractory material processed from a blend of high purity alumina-silica fibers into a highly flexible, uniform sheet. It is recommended for continuous use at temperatures up to 2300°F (1260ºC).
LyTherm® Rollboard is a low cost, utility grade paper that has low shrinkage, good handling strength, and low thermal conductivity. It contains a small amount of organic binder for processing which makes it flexible, yet reduces off-gassing and odor during use. LyTherm® Rollboard has a highly uniform structure due to its controlled basis weight and thickness, assuring homogeneous thermal conductivity and a clean, smooth surface ideal for gasketing or sealing.
LyTherm® Rollboard is completely free of asbestos and is designed to be an economic replacement for asbestos paper in most applications. LyTherm® Rollboard is easy to handle and is readily cut with a knife, shears, or standard steel rule dies. Its flexibility allows it to be wrapped or rolled to fit most comlex configurations.