That stuff really bonds too,if the surfaces are good and clean (I use brake cleaner )...
My friend had a truck at his shop recently that he had done a gear lube change & flush in hopes it would ward off having to replace the diff,which had been wounded by running it almost out of gear oil ,thanks to a rot hole in the rear cover...
It ended up eating the front pinion bearing,and he told the guy he'd be better off just buying a good used rear end for it ,he doesn't do diff repair,so the guy found one for $250 at a salvage yard..
He went to pull the new rear end cover off he'd put on a few months ago to use on the used diff (it was rusted and ready to leak too,like his old one)..he used the Right Stuff with no gasket to put the new diff cover on the now junk rear end,and he had to use a hammer & putty knife to cut thru the sealant,it stuck so firmly when he tried to pry the cover off,it started to bend,it didn't want to peel off!...had to use the putty knife like a chisel all the way around to get it off without bending it!..
I've watched a guy on YouTube smear a whole caulking gun tube of Right Stuff over a 7.3 diesel's rotted oil pan--all he did was hook up a shop vac to the oil filler opening and blocked the breather off,and sprayed the pan off good with a few cans of brake cleaner ,then smeared it over the entire pan using rubber gloves,left the vacuum running for 15 minutes ,then shut it off..no more leaks!.
He .didn't even have to drain the oil..beats taking the cab up off the frame and having to pull the engine to put a new pan on..it was an old plow truck that didn't see much road use,wasn't worth doing it "right"..