Thank you for reaching out! We do not personally offer any lacquers or sealants to put on our sinks. Our sinks are made without any sealants on them as we believe the beauty of copper is in the way it naturally changes over time. If you would like to try and reduce this, we recommend applying a thin coat of Carnauba wax once your sink is at the finish that you desire. This will work as a 'Protective layer" of sorts so that your sink will not react to different materials it comes in contact with so easily!
This sink is 19 inches across by 14 inches wide and 5.5 inches deep on the outer most dimensions.
This is made of pure solid hammered 18 gauge copper. The hand hammering strengthens the copper to be about as strong as automotive sheet metal.
Most likely will, but you really need a unit that doesn't have a very wide flange, and you can see in the picture that the depression where the pop up sits it rather shallow. I had to remove the pop up's silicone gasket, and just run a bead of silicone caulk.