Owing to their beneficial properties, such as their cold flexibility and temperature resistance, silicones are applied in many areas today. This material group is used the most in medical technology, because it possesses an excellent mechanical property profile while being a physiologically safe option. Hard-soft composites, which are a subgroup of multi-component elements, are of great interest. They offer the possibility to include various properties into one synergetic component. The adhesion properties of liquid silicone rubber (LSR) and polycarbonate (PC) were examined in this research proposal. In order to guarantee the adhesion of both components, an activation of the surface is usually carried out. The resulting adhesion is dependent on the secondary treatment processes that are common in medical technology. They include tempering, sterilization, and storage. The following secondary treatments were carried out, and the reciprocal effect with the surface activation was subsequently validated using a peeling resistance method modelled after that of VDI 2019. Tempering: Significant differences were not identified for freshly injected, non-tempered, and tempered composites in regards to their exposure times. Sterilization: Sterilization resulted in an increase in the degree of adhesion. Storage / Aging: Artificial aging led to an increase in the degree of adhesion when the dispersion was extensive, but declined again as the exposure time extended. Storage experiments revealed that the exposure time only influenced the adhesion significantly if the samples were stored at higher storage temperatures. Additional results will be introduced in detail.