i think i found it !

https://rainbowtech.net/products/clear-rtv-silicone-sealant/

as i didn't have any left to get a picture of, [i tossed the last empty tube] i was trying to remember what the name of the company was that made it. and FINALLY, i remembered !
as you can see, it says "adhesive/sealant" on the label, [even though the link just says sealant] and it's in a "cheeze whizz" container. [or at least that's what i call it]
we used this stuff at work in the maintenance department, and it was used for everything under the sun. worked great !
before i started this thread, i called up the maintenance boss, but as he is new, he said they didn't have or don't use, anything like that.
in my search locally at the ACE hardware, the only thing they had was "sealer" without the adhesive wording on the label, and it was in a toothpaste type of tube.
at least now you guys can see i'm only half crazy.
and Stanton, that 3m link looks like good stuff i'l have to try.