In sci.electronics.repair, on Tue, 06 Oct 2015 23:07:03 -0700, OldGuy
wrote:

http://www.amazon.com/Sashco-13013-S.../dp/B0012DIUYW

Lexel Adhesive Caulk

read the fine print.
can use on polycarbonate as I did, so most anything it sticks to and
remains slightly flexible.

I bought a gun-sized tuber for the bathtub, etc. but havenn't used it
yet.