How can I effectively seal the new drain with the sink basin to prevent leaks after replacing the old faucet?
Asked by Josselino da Paz 
4 months ago
Last Updated: July 26, 2024
Hey! I recently swapped out my old sink faucet for a new one, and it came with a matching drain. However, I’m having trouble getting the seal between the sink basin and the drain to stop leaking. Any advice on how to fix this issue?
Give it a good twist.
You should use plumbers putty on the top
I’m going to give this a try!
Plumbers putty isn’t the seal for the drain; it’s actually the rubber gasket at the bottom that does the job. Putty just prevents it from spinning. I’d recommend using thread sealant on the rubber gasket at the bottom and tightening the nut to stop the leak.
Got it, so should I apply the thread sealant above the gasket or around the nut?
Tighten the nut on the gasket where it meets the bowl, turning it a 1/4 at a time until the leakage stops.
Could use some more flexible pipes.
Apply plumbers putty between the sink and the drain before securely screwing it down. Clean up any excess that comes out around the top of the drain.
Did you also place an off white rubber gasket on the top of the sink? It could have been installed incorrectly.
1. Can you tell me what the instructions indicate between the drain pipe and sink? If there’s no gasket, do I usually need plumbers putty?
I realized the gasket was on upside down, but I fixed it and now it’s almost sealed. I think some putty will help finish the job.
They only had ‘ p trap kit in stock at the place I visited.
I managed to fix most of it. The rubber gasket was actually upside down. 🙃 I’m going to give plumbers putty a try to address the very minor leak that remains. Thank you everyone. 🫶🏼
It’s a good idea to replace the flexible pipe to prevent clogs and bad odors.
You should remove that flexible component and seal everything with silicone instead.
That drain will start to smell if you leave it with plumbers putty for too long.
Avoid using flex pipe as it may lead to clogging. A standard P trap should suffice for your needs.
Add more putty
Make sure to apply some plumbers putty underneath the drain collar inside the sink. Use a generous amount, secure it well, and clean up any extra. Otherwise, it might leak.
To solve that issue, you must purchase a pop-up assembly without overflow holes. Simply get a pop-up with threads running along the entire length.
The drain assembly in ‘s sink is popping up.
That’s the right name, ! But what I mean is that you should look for one with threads that go all the way up to the flange part. Let me see if I can find a picture for you.
Hey , I really appreciate your help! I’ve learned a lot from YouTube, so I’m open to any advice. 😊
In many areas, using flex pipes is not up to code and can lead to clogs – make sure to install a proper p trap instead.
‘t forget to include the rubber seal or apply plumbers putty on top.
Remove the flexible pipe. It’s no good. And why isn’t there a rubber gasket connecting the bottom of the sink? You also need plumbers putty.
Hey , I actually had it installed the wrong way up. But when I flipped it over, the leak was almost fixed. Do you think adding some putty to the gasket would fully seal the connection?
No, plumbers putty is only used between the drain and the sink on the top side.
Before you tighten the drain, remember to place a ring of putty underneath.
Try disassembling your drain, apply plumbing sealant between the drain flange and top of the bowl. If there is a silicone or rubber gasket provided for the top, the bowl may be preventing it from forming a proper seal.
When applying the sealant, make sure to use a considerable amount and shape it like playdough, spread it around the opening, and reinsert the drain from the top. As you tighten the nut on the underside, you should see excess sealant squeezing out around the drain flange.
Plumbing sealant
All of the aforementioned options are accurate 👍🏽
I’ve noticed a lot of comments about the flex pipes. They were the only option available where I was shopping. Thanks for informing me that this isn’t a permanent solution, but it did allow the drain to be used for the time being. 😊
There’s a rubber seal on top and a rubber gasket at the bottom of the sink basin. Would it be okay to use plumbers putty on a rubber seal or gasket, or should it only be connected to the sink itself?