For your consideration:

3M 8672

I've used this for several years - great stuff, IMO. Clear, nearly invisible, stays put, doesn't yellow, and tough. I wrap it around frame tubes under bottle cage clamps, top tube brake cable clamps, etc. A layer goes on the chainstay to avoid further paint dings.

Here's a wrap around the downtube to prevent the brake arm from making further damage.


Even used it on my bars and stem so my front-mount bottle cage won't mar the anodized aluminum. Hasn't worn through in 3+ years.

It's not cheap, but worth it, IMO.
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