Galley sink stopper?

[bramfam]

Hi all, Our HC33 came with no sink stoppers. I found a ten year old thread indicating that standard stoppers from Home Depot would fit, but that seems suspect as most are described as being over three inches wide and the sink Fran's on the HC33 are about 2.8 inches wide. Can anyone recommend a specific product? I already bought a couple that didn't fit.