Where can I get this stuff?

[tsubaki]

This is off a 1995 Ocean Runner, 115 horse.
The carb bowl is of a plastic material and one of them has developed a leak, found the leak.

It was where they put the ball into the side and the sealant has degraded.

The book said (on a different motor type) to seal the ball with Johnson/Evinrude Gasoila. Did a search of Gasoila and came up with an entire company (much like Loctite), now I'm trying to find the correct sealant for this application and where to get it from.
Went to an autoparts store (read every sealant on the shelf), a boatyard and West Marine (about only things available today) and got dumb looks and stares.
Ya'll got any ideas?