We replaced the corrian sink, have all the parts except the end that goes over the overflow that is aprox an inch long. I saw a picture of it on your site from someone else, but have no idea where I can buy it. Anyone know what this part is named? And where can I get one?

It is the rectangular piece that fits at the end of the valve, there original question was regarding glueing it on. Thanks!

Suggest you try to find a local Corian fabricator.

The manual or instruction booklet that came with the sink should show and name that part you are speaking of. If not go to the manufactures website and check under parts/ replacement parts or click on contact us and tell them what you are missing and need.
Good luck, Tom