Casing has closure, which is arranged and designed such that fluid is filled after opening closure in air space between ceramic and casing, and casing is inserted in ceramic mass

摘要

The casing (10) has a closure (16), which is arranged and designed such that the fluid is filled after opening the closure in the air space (14) between the ceramic and the casing. The casing is inserted in a ceramic mass (12) hardens after mixing with a fluid at temperatures greater than 1000 degree centigrate and has fire proof characteristics.