We had a clog in the sink, so I took the parts apart, cleaned them, and resolved the clog.
But when I screwed the parts back together, a leak appeared. Water is dripping from underneath the part I screwed on:
I unscrewed and screwed it on several times to make sure it was threaded correctly, but the same problem occurred. Tightened it properly.
After a few attempts, it completely locked. I can't get it off again, with either hand or pliers. But on the other hand, it was never the problem; the water is coming out underneath it.
The question now is if I can seal around here:
With this:
It will indeed mean I won't be able to open it again, but as it stands now, I can't do that anyway.
The question now is whether I can seal around here:
It should be sealed without silicone, so something is wrong. Incorrectly installed, damaged, or missing gasket.
I think I see a rubber gasket there. Shouldn't it be on the other side?
What you see underneath is not a gasket but just a protruding edge.
The cause of the leak must be that there is no gasket. However, I don't understand why it didn't leak before. I haven't seen any gasket when I've opened it up.
I'll buy a gasket tomorrow and put it in, then it should work
The cause of the leak must be that there isn't a gasket.
Yes, there must be a gasket, otherwise it won't be tight.
Logically, the gasket must be somewhere if it was tight before. It's not stuck on the sink side, or you got double gaskets on the other end, or it's lying in some corner on the floor?