Red Oxide

I have treated the rust with a rust catalysing solution but I am looking at a tin of red oxide as a further barrier perhaps to "Leyland Rouge" returning?
Is this a good idea as I intend to paint over the tube with a hammer type finish and just wondered what other people did DIY to stop rust from making its unwelcome comeback tour?
Is this a good idea as I intend to paint over the tube with a hammer type finish and just wondered what other people did DIY to stop rust from making its unwelcome comeback tour?