Here, the two men began to concern themselves with seals and also presented their doctoral theses on this subject. Kaiser developed a simulation program, with the help of which the tightness of rod seals can be calculated. It helps developers to select the optimal seal variant for the particular application and to assess its performance. This allows customers to significantly reduce the number of necessary tests during the development process.
Neuberger devoted himself to the further development of Levitex, a gas-lubricated mechanical seal. With Levitex, the glide ring runs together with the mating ring on an air cushion. The basic idea for Levitex came from business partner Burgmann Automotive. Neuberger simplified the first, still highly complex generation and succeeded in transferring a product that had been designed for compressors and turbines to the requirements of combustion engines. As a result, 90 percent less friction losses can be achieved compared with a conventional crankshaft seal, which reduces CO2 emissions by up to one gram per kilometer. This product was highly valued by the industry, which was decisive in winning him and his then project team the Freudenberg Innovation Award 2016.