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With the new sealing system PYROCOMB® Intube, it is very easy to create seals in ceilings or walls and also in light separation walls. For this, both halves of the pipe sleeves are clicked together and bedded in mortar in the core hole. Then, the pipe sleeves are closed with seals and the surface is sealed with ASX fire protection coating. The cables don't require any coating. In case of a fire, the inner coating of the PYROCOMB® Intube expands and, in so doing, closes the opening cross-section completely. The transfer of fire and smoke is safely prevented.