Abstract: There is disclosed a composition for a soft (non-metal) sealing material having the following percentage composition based on the overall composition: from 4 to 9 wt. % of fibrillated polyaramide fibers; less than 60 wt. % of powder graphite having a carbon content of 90 to 92 wt. % and such particle size distribution that at least 85% of all particles are in the size range of 10 &mgr;m to 50 &mgr;m; about 30 wt. % of mineral fillers represented by a combination of microsilica having a SiO2 content between 90 and 95 wt. %, a specific surface area according to BET method of 15 to 25 m2/g and such particle size distribution that at least 90 wt. % of all particles are in the particle size range under 5 &mgr;m, and of an active mineral filler having a SiO2 content of at least 98 wt. %, a specific surface area according to BET method of 100 to 120 m2/g and such particle size distribution that at least 90 wt.