I was down in the cellar yesterday and there's a cut out where you can see up to the bottom of the tub in the bathroom upstairs where someone was taking a bath and I saw water leaking and dripping down. Come to find out I think it's coming from the over flow drain. I removed the cover and saw a strange plastic threaded "gasket" that screws onto the drain pipe and the drain pipe seems likes it's "afixed" to the hole somehow ( I couldn't seem to budge it). I didn't see anything that resembles a "gasket" in there save for maybe that plastic thing that threads over the overflow pipe. Can anyone help?

Hi everyone, thanks for your time. I have a tub that’s blistering quite a bit around the drain and I’d like to seal it before it eventually leaks. I’m not sure if it’s acrylic or fiberglass but it’s a standard shower setup. I first used JB Weld 8277 and it mostly worked but I can scratch it off with my fingernail, which is very disappointing. I want to sand that down and try again and am looking for feedback on good repair kits, whether it’s epoxy, fiberglass patch, or whatever you recommend. One important factor is kids use the tub so my wife is worried about toxins. That’s why I tried JB because it said safe for drinking water. Other solutions I’ve looked at seem very toxic. Should I try 50172 instead, or try Rust-Oleum Tub and Tile repair kit? Both have pretty mixed reviews and I can’t find a lot of data on their safety once dry.