This is an area where I think I'd want an expert opinion. So my advice is to call one of the authorized repair depots - not Nikon. Nikon will want you to send the lens in for evaluation and repair. The authorized repair depots probably won't have such a narrow view of the world, and they will also have the experience to perhaps give you some reliable advice.
I would certainly feel comfortable saying the following: you almost certainly do NOT want to use any of the liquid cyanoarcylics (ie "superglue") as you just don't know where they will end up in no time at all. This is especially true if there are any screws or other holes in the zoom ring under the rubber. But that only tells you what NOT to use, rather than what you SHOULD use.
I am curious as to what you find out.
_____ Brian... a bicoastal Nikonian and Team Member
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