Mold-able glue with great adhesion and filling properties, which cures into a silicon-type flexible seal. The page says "with deal" so I’m not sure about the Prime bit, as it won’t always tell you that if it’s Prime only. I got it on a previous SD, and while it’s pricey per application, it really is as good as the hype.
https://www.amazon.com/Sugru-Mold…ords=sug
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