Does this trap adapter need a washer or not?

[Bobby Roberts]

DIYer here, trying to sort out my kitchen sink situation after switching from 2 drain to 1 drain. I bought a NIBCO 2in trap adapter fitting, and the hardware store guy said it didn't need a washer, it was built into the nut. It kind of looks like that, but I wasn't familiar with that setup.

Anyway, when I get it all installed and put the wall tube into the trap adapter, it fits but doesn't seem to snug up. And when I run the water, I'm getting a small drip. Nothing crazy, just some drops after running water for awhile.

For further context, the previous connection had the wall tube glued into a 2in->1.5in reducer fitting. I cut that off to add a 45 degree bend that I needed for the new location of the disposal. I thought the trap adapter was a better idea than gluing into a new reducer, but now I have a drip...

Do I need to add a washer? Get a new nut? Any advice?

Thanks

 

[WorthFlorida]

Not sure the type of slip nut you have but most can change out the washer for either 1-1/4" or 1-1/2" drain pipes. If it looks like this you need to change the washer to 1-1/4 for the trap arm.

 

[Sponsor]

 

[Bobby Roberts]

Not sure the type of slip nut you have but most can change out the washer for either 1-1/4" or 1-1/2" drain pipes. If it looks like this you need to change the washer to 1-1/4 for the trap arm.

View attachment 93539

Looks like the same one I got: https://www.homedepot.com/p/NIBCO-2-in-PVC-DWV-Trap-Adapter-Fitting-C48017HD2/100344161

Is it true that some of these have "built in washers"? Can you add an additional washer to that if so?

 

[Reach4]

No. Get a new nut and washer.

https://www.homedepot.com/p/Oatey-1...ith-Rubber-Reducing-Washer-HDC8033C/316622099 or https://www.homedepot.com/p/OATEY-1...th-Rubber-Reducing-Washers-HDC2698C/316622089

With a kitchen, you would use the 1-1/2 inch washer.

 

[Bobby Roberts]

No. Get a new nut and washer.

https://www.homedepot.com/p/Oatey-1...ith-Rubber-Reducing-Washer-HDC8033C/316622099 or https://www.homedepot.com/p/OATEY-1...th-Rubber-Reducing-Washers-HDC2698C/316622089

With a kitchen, you would use the 1-1/2 inch washer.

That plastic one worked. Thanks!