Hi all! New to the community but would appreciate any help as this is my first foray into home DIY. Recently the toilet seal around my toilet broke and now the bathroom is quite smelly. I did a search for previous posts that had quite in depth instructions in replacing the seal. However...in my case it seems to look a bit different to the seals you can purchase from Bunnings directly as it looks like a sealant to me (but it might just be old and I could be wrong). Have attached photos below, hopefully it is easy to see the black ring that doesn't go around the whole pipe anymore. Any help is appreciated on what I should buy to replace it, and the process to replace it? Thank you in advance.
