Pyrotherm L20M and L23R are rigid, high-temperature ceramic fiber boards constructed from alumina-silica fibers and binders. This relatively lightweight board is manufactured with a uniform density. It is strong and self-supporting, and has good rigidity and modulus of rupture. These features make it well-suited for applications experiencing vibration and mechanical stress. If the material becomes wet by water, steam or oil, thermal and physical properties remain as specified upon drying.

Features

• Low thermal conductivity
• High-temperature stability
• Resistance to thermal shock
• Resistance to chemical attack
• Machinable
• Resistant to erosive forces
• Resistant to attack by most corrosive agents

Applications

• High-temperature baffles and muffles
• Flue and chimney linings in furnaces
• Molten metal trough covers
• Hot gas duct lining
• Pouring forms for castables
• Industrial heat shields and thermal barriers
• Industrial combustion chamber construction
• Full thickness refractory lining
• Backup insulation for dense refractories
• Backup insulation for brick and castables
• Board over blanket hot face lining
• Rigid high-temperature gaskets and seals
• Trough linings for conveying molten metals
• Expansion joints