Super Firetemp® L is an inorganic, non-combustible, high-temperature insulation for fire protection applications. It can be used in systems operating up to 1800°F (982°C). Super Firetemp L is made primarily of lime, silica and reinforcing fibers. This product is white, essentially dust-free, contains no asbestos, mercury or lead, and meets or exceeds ASTM C656, Type II Grade 5.