A sensor (110), a sensor assembly (256) for detecting at least one analyte in a body fluid and methods of manufacturing a sensor (110) and a sensor assembly (256) for detecting at least one analyte in a body fluid are disclosed. The sensor (110) has at least one substrate (114). The sensor (110) further has at least two electrodes (116) applied to the substrate (114), wherein the electrodes (116) are adapted for detecting the analyte. The sensor (110) further has at least two contact pads (118) applied to the substrate (114) and at least two electrical traces (120) applied to the substrate (114). The electrical traces (120) electrically connect the electrodes (116) and the contact pads (118). The sensor (110) further comprises a sealing ring (134) fixedly applied to the substrate (114). The sealing ring (134) surrounds the contact pads (118).
