My toilet cistern is leaking water straight into the toilet, just as fast as the cistern is filling. I don't know all the terminology but the washer that forms a seal between the pipe that drains down, and the siphon itself had a big blister on it that I popped, and now looks almost as good as new. It's very smooth, apart from one microscopic bobble where the blister was. However it's still pouring down, as if there's something else wrong with it. I did try to get a replacement washer, but the only one the plumber's merchant had looks the same (it's a Gerberit one, my old one is unbranded) but it's slightly thicker and a bit wider. This is the siphon (can't see a brand name on there)...
And here it is with the old washer attached (notice the washer doesn't go all the way to the edge, which I would have thought was necessary?!)
It slots and then 'twists to lock' into place in this...
I can understand a tiny bit of water leaking in given that it's not 100% perfect, but it's still leaking torrents so I wondered if anyone knows if something else could be broken inside (in addition to the washer). Should I just get a new siphon?
I can provide more pics / details if necessary. Really appreciate any help.