A connector sealing plug for sealing openings on a connector. The plug includes a rod with a first end and a second end, with the first end having a first diameter, and the second end having a second diameter. The rod has a first bevel at the first end and a second bevel between the first end and the second end. The second diameter is larger than the first diameter, and the rod is adaptable to tool-lessly press fit into and out of the sealing openings such that a fluid resistant seal is formed and contacts within the connector are protected, wherein the sealing plug does not engage existing mechanical locks within the connector. The first end has a first fossa and the second end has a second fossa. The rod has a defined configuration identifiable by size, color, and fossae, and the rod is manufactured from electrically insulating material.