My kitchen sink is leaking.
It's just the seal above the u bend that has come loose but no amount of screwing it tighter will get it to 'cling' to the other pipe.
So, I clearly need a new one.
If I go to Plumbbase in town, what do I need to ask for? What's the part called?
Pic in post 1.
Are all kitchen sink pipes the same width?!