warsquiat OP t1_jdxvj2e wrote on March 28, 2023 at 12:03 AM

Reply to comment by A_Plumber2020 in Replacing kitchen faucet and there’s this weird substance under mounting nuts. What do I do? by warsquiat

Yeah that’s what I ended up doing. Have the sink installed and wverything is fine, except a piece under the sink was totally corroded and broke off so now there’s a leak. Here’s the piece and where it goes. Do you have any idea about how I could go about sealing this?

A_Plumber2020 t1_jdypn04 wrote on March 28, 2023 at 3:54 AM

Looks like you need a new "branch wye" (that's the name of the piece of pipe with the little arm on it that the hose is connected to). It connects to the "basket strainer" (the piece that goes through the sink opening) using a "slip joint" nut and washer. You should be able to take it off with a pair of adjustable pliers. Make sure you have a new "flange washer" for the connection between the "branch wye" and "basket strainer". If you take this photo to a hardware store or plumbing supplier, they should be able to outfit you with the proper parts.