Typical applications of tubing in the medical field represent flexible hoses for the infusion of fluids directly into the human blood circulation. In this application field, thermoplastic elastomers (TPEs) have found to be good alternatives to the common used plasticized polyvinyl chloride (PVC-P). There are special requirements for medical tubing like transparency, flexibility or an appropriate kinking performance to name only a few. Kinking performance of medical tubes is a crucial requirement with regard to safety and packaging. For that reason, different TPEs as well as PVC-Ps were benchmarked towards their kinking performance (short-term, long-term and recovery). In addition, mechanical stress relaxation was carried out in order to find correlation between viscoelastic behaviour and kinking performance. The goal of this approach was to figure out wether product performance, i.e. kinking performance, is predictable by using a standardized mechanical test method. Therefore, experimental data were generated by stress relaxation method iTSSR (Isothermic Temperature Scanning Stress Relaxation, Brabender GmbH & Co. KG) using tube shaped samples. The viscoelastic behaviour analyzed by iTSSR can be described by spring-dashpot systems with three maxwell elements connected in parallel. It was found, that there is correlation between viscoelastic behavior and a distinct product performance, i.e. kinking performance. Thus, material modelling using a multi-mode maxwell model for viscoelastic behavior represents an effective way of predicting kinking performance and benchmarking various materials. For this reason, further studies on additional features will be carried out.