This stuff is expensive and has a short shelf life. I used this stuff on some loading coils using copper tube. With severe, icing, snow and many winters the corrosion eventually got under the surface of the goop. The goop eventually just flaked off....
For an application like that, try the liguid that is made to dip the handles of tools into. That stuff wears much better. Be prepared to retreat the connection every couple of years, however, if it is out in the sun and weather. There is nothing like that for such applications that is going to last forever, especially out in the weather.