STASSKOL has been engaged in sealing elements for rotating systems, the shaft seals, only since 2009. Within a research project STASSKOL developed a greatly improved shaft seal for high pressure applications, the SDS100. Instead of using many narrow rings in the shaft seals, as done previously, now a reduced number of wide rings is used. This shaft seal have about 25% less leakage with shorter installation lengths. In addition, these seals are easier to assemble and also up to 30% cheaper due to the lower number of components.