Using water as a blowing agent together in an extruder with special equipment it is successful to produce low density TPE-V. Foamed TPE-Vs are colourable, recyclable and have the possibility of thermoplastic processing, On the basis of a tube and a triangular cross-section the physical properties dependent on the amount of added water were tested and compared with those of EPDM sponge elastomer, The temperature dependence is discussed, Using the possibility of combination with other TPE-materials and also with thermoplastics there are a lot of opportunities for multifunctional sealing-profiles by saving weight at the same time.