Pop-Up Sink Strainer & Stopper does it all! Use it as a strainer to catch food particles before they clog your sink. Or convert it to a water-tight stopper with a push of the finger. Measures 4 ½” and fits most standard sink openings. Made of stainless and silicone. Rust-proof and easy to clean. Available in gray and red.
These are OK, but not quite what I was looking for in a stopper. I need one that would hold water for at least an hour, but this one gradually leaks. OK for short term water stoppage.