Various splice connector assemblies are disclosed. The splice connector assembly can include a connection unit mating a female and male terminals. The splice connector assembly can include an outer housing with an inner passage configured to receive the terminals. A first securing mechanism can be engaged with a first end of the outer housing and a second securing mechanism can be engaged with a second end of outer housing. The first and second securing mechanisms can each include a coupling nut engaged with the housing, a washer that is non-rotatably connected to the housing, and a sealing gland that comprises an aperture having a non-concentric cross sectional shape.