Plumber's putty is used under the sink drain, left top, and silicone caulk under the lip of the sink, left bottom, to hold it in place and create a barrier against potential water problems. Mark the ...

Plumber's putty is a clay-like sealing material that remains soft, making it perfect for creating watertight seals around faucets and drains. While caulk has largely replaced it in many applications, ...