I have a crack in a Blanco Siligranite sink.....is there an adhesive I can get into the crack to re-bond and seal the area?
How did it crack? Trauma or boiling water?
Is the crack open or is there a tight seam?
If it's tight, you would need a liquid type of adhesive that could get into the crack. Something like Super Glue. I have no idea if Super Glue is even applicable, but that's the consistancy you would need.
Two issues that come to mind is that the crack would need to be bone dry and you would have no idea if it got into all the areas it needed to get into to maintain a waterproof seam.
Worse case scenario, you get a new sink if it doesn't work.
You might call the company for advice before you do anything.