Polylack K is a fire resistant white colour paste that gets foaming by exposed to heat and becomes an elastic material as solvent (water) dissolved. It has a valid Building Technical Licence in conformity with MSZ EN ISO 1513:2000 standard. Due to its special quality it may be applicable to 1-2 mm dilating walls, to fill in gaps between cables, tubes, windows, doors with fire-resistant substance, for example. Besides, it is also apllicable to special cables or pipes and to create fire resistant tip on small bunch of cables- maximum 50-60 mm in diameter.