Axial face seal (sliding ring seal)

摘要

The present invention relates to an axial face seal (10) in which a seal element (1) comprises a sintered ceramic material containing aluminium oxide (alumina) and the seal element (1) is in contact with a counter-element (2) preferably made of carbon bonded with synthetic resin. The material of the seal element comprises from 60 to 93% by volume of aluminium titanate and the remainder is composed of up to: 20% by volume of aluminium oxide 25% by volume of titanium oxide 6% by volume of silicon oxide (silica) 5% by volume of iron oxide 10% by volume of zirconium oxide (zirconia) 10% by volume of magnesium oxide (magnesia) 5% by volume of one or more oxides of yttrium, lanthanum and cerium a maximum of 2% by volume of oxidic impurities and up to 20% by volume of reaction products of these oxidic compounds. All proportions by volume, with the exception of the proportion of pores, add up to 100% by volume. <IMAGE>