I have absolutely no clue about plumbing so I apologize if any of the terms I use are wrong.
My p-trap is leaking, the outlet side threads on to the pipe in to the wall, but the inlet side just pushes up against the drain pipe from the sink. I thought this was maybe normal, but it leaks badly if there is even mildly heavy flow of water running through.
Looking at it, it looks like there used to be a seal glued on that maybe would have allowed it to screw on? I'm not actually sure. To be honest I just now realized that the rubber part was not actually a part of the p-trap.
So what happens now is the inlet side scootches up and down the drain freely, and leaks pretty badly. It seems like previously there was a rubber seal that was attached to the drain and the screw would then pull the p-trap up against the seal (but over time it just ripped it off).
Is there a better way to do things here? Should I get a new seal and just glue it back on? Any perspective is appreciated, thanks! Also happy to provide more info/photos.
EDIT for posterity: what I am referring to as the "seal" was a rubber slip joint washer that had totally disintegrated.