Sealant for fire-prevention doors

Tape on doors and hatches sealing with thermoexpansion. The sizes of 1,5х15 mm, in one roll of 20 meters. It is pasted on a door in places of a sealant, under the influence of high temperatures distends and blocks penetration of charcoal gases through a door or the hatch. Goods of production of Russia on technology of the company from Germany.