Electrical connector including a connector housing that is configured to engage a mating connector during a mating operation. The electrical connector also includes a plurality of electrical contacts that coupled to the connector housing. Each of the electrical contacts includes a proximal base that is coupled to the connector housing and an elongated body that extends from the proximal base to a distal end. The elongated body has a body side that extends between the proximal base and the distal end and is configured to engage a corresponding mating contact of the mating connector. The body side has a stamped indentation, wherein each of the electrical contacts includes a pore-blocking substance within the corresponding stamped indentation and along a surrounding portion of the exterior surface that is adjacent to the corresponding stamped indentation.