A ball mount assembly comprising a ball mount including a body having an opening and a base, the ball mount having an internal passage extending through the opening of the body in an axial direction of the ball mount; a compression fitting secured to the ball mount; and a sealing insert disposed in the internal passage of the ball mount, wherein the sealing insert is interposed between the compression fitting and the ball mount in the internal passage, and wherein the internal passage of the ball mount is defined by a first sidewall and a second sidewall.