Sealing Systems for concrete pipes and manholes have to meet high requirements. The gaskets have to guarantee a sealing for the whole lifetime by means of contact pressure. To avoid a leaking gasket, they have to create sufficient sealing widths. In addition, the pipe connection should of course be easy to install. To be able to meet all requirements, the material and geometry of the gasket has to be adjusted exactly to the needs of every single pipe or manhole plant.