FIELD: chemistry.
SUBSTANCE: disclosed material contains the following components, wt %: inorganic fibre 20-40, rubber 3-12, low-molecular weight polyisobutylene 0.1-1.0 and foamed vermiculite with packed density of 28-80 g/l, obtained by treating the starting vermiculite with hydrogen peroxide with concentration of not less than 35% - the balance. Also disclosed is a method of producing said material, wherein foamed vermiculite is mixed with inorganic fibre and water to obtain a first mixture. The rubber and the low-molecular weight polisobutylene are then mixed to obtain a second mixture. The first and second mixtures are mixed to obtain a mixture from which the material is formed.
EFFECT: improved sealing properties of the material and high operating temperature of the material.
14 cl, 5 tbl
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