A biomedical electrode for use with a signal receiving apparatus is disclosed herein. The electrode includes an open-sided resilient container having a permeable diaphragm closing the open side. A terminal plug is positioned in connection with the resilient container. An electrolyte is contained in the container, and permeates the permeable diaphragm. A flat closed-cell perforated flexible annular mounting pad surrounds the container, and is secured to it. A flexible stainless steel ring engages the resilient container, and secures the flat closed-cell perforated flexible annular mounting pad in fixed engagement with a flange of the container. A uniform adhesive is secured to a side of the flat closed-cell perforated flexible annular mounting pad adjacent the permeable diaphragm for adhesively securing the electrode to the surface of a subject. The resilient container and flat closed-cell perforated flexible annular mounting pad are releasably mounted on a release paper and diaphragm sealer.