hi, I'm new to forums and handy work and have a leak under my bathroom sink. I'm not sure of the name of the part leaking - directly under where faucet connnectd to sink (above supply line connection). I changed the supply line thinking that was the issue but it's above that - a plastic fixing that looks like a nut ?
Will try to attach photos 1) showing part, 2) my finger pointing to leak.
My questions are 1) what is name of part and 2) can I fix it relatively easily ?
Thanks for any guidance , Trish
Ps: In photo it's the white plastic fixing right up (glued?) on bottom of sink.