Whether tunnel boring machine, ship's engine or loading hatch. Special profiles, cords or hoses are used whenever there are large sealing points that cannot be sealed with molded seals or O-rings, or can only be sealed at great expense. Over 3500 different profile nozzles and numerous materials are available for this purpose. In addition, the development and production of customer-specific designs is possible, whereby the tool costs are very low compared to molded parts.