bathroomsink
My bathroom sink drain was slow in clearing so I used this chemical drain opener that has worked for me past on other sinks and tubs. https://www.homedepot.com/p/Instant-Power-128-oz-Hair-and-Grease-Drain-Opener-1972/302373121
However, this time I ended up with damage. I thought my sink was of metal but now I am not sure. The paint is damaged and it reveals a discoloration with maybe wood beneath or some alloy.
Can I fix this by simply painting this over? If yes what kind of paint.
Plumbers putty , in a 3/8 in thick rope circle, goes under the top part.
It helps to have a helper push it straight down and keep it from turning while the jamb nut and rubber washer and (sometimes paper) thrust washer. The rubber washer goes against the sink. The thrust washer goes between the rubber washer and the jamb nut.
If someone used some thread dope previously, get the mating surface of the sink cleaned off.
If the rubber washer or the thrust washer is deformed, replace them.
This video from Anaheim shows the mounting of the "Cushion ring" in step 6
A locknut wrench helps to loosen/tighten the nut.
This video shows replacing an ISE with a Waste King
If you go to amazon.com and search for "sink hole cover", you will find something that's acceptable.
Best Answer
I've used HOMAX Tough as Tile for years. It's an epoxy coating that will stick to just about any clean surface. You can pick this kit up for about $25. It has everything you need for the job (Tri-Sodium Phosphate, Brush, Gloves and Paint). Follow the directions and especially the cleaning section in order to remove soap scum, etc. The process requires 2 coats and will take about 2-3 days to dry but you will be amazed at the end result which will be a candy shell appearance like porcelain. For optimum results, remove the drain for the work and then re-install it when the job is finished. The fumes will need to be addressed by ventilation and the odor is also a consideration.
Note: This kit comes in almond or white. It also comes with a spray can option which I don't recommend. The spray gets all over everything and takes a long time to dry.