Fiber optic cable assemblies with cap apparatuses for sealing optical fiber connectors and associated methods

A cap apparatus is mounted to a fiber optic connector having a ferrule supporting optical fiber(s). A sealing apparatus is cooperatively configured with the cap apparatus for protecting an end face of the ferrule. The cap apparatus includes a body having opposite ends between which a cavity extends. The opposite ends of the body respectively define first and second openings to the cavity. A portion of the fiber optic connector extends through the first opening and into the cavity. The cap apparatus includes a cover mounted to the body and at least partially obstructing the second opening, wherein the end face of the ferrule is positioned within the cavity at a location spaced from the cover. The sealing apparatus is positioned between at least a portion of the cover and the end face of the ferrule.