Silicone for a sink strainer?

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Old 05-06-17, 01:35 PM
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Silicone for a sink strainer?

Hi All,is silicone under a sink strainer something new? this is a new Condo without out a disposal, I intend to be installing a disposal shortly and noticed the silicone, any easy way to remove the strainer?
Geo
 
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Old 05-06-17, 01:45 PM
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Some plumbers prefer silicone over plumbers putty, and depending on what your sink is made of, silicone may be required. Brute force is needed to remove the old one. If you can't do it, cut a 2x4 about 1/4" shorter than the distance to the bottom of the cabinet, then from under the sink, put a pry bar inbetween and pry it upward.
 
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Old 05-06-17, 05:17 PM
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Its a SS sink, I would be afraid to apply to much pressure from underneath, we'll see,
 
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Old 05-06-17, 05:38 PM
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You should be able to get the old strainer off. Clean off all the old silicone with denatured alcohol or acetone.
Technically you're supposed to use silicone on a stainless steel sink but I use plumbers putty.
I don't want to wait for the silicone to set up, maybe 4 hours or overnight.
 
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Old 05-07-17, 06:33 AM
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Technically you're supposed to use silicone on a stainless steel sink but I use plumbers putty.
Brian, are you sure about that? I think it's just opposite, silicone on cultured marble and putty on stainless. At least that is the way I have always done it with no ill affects on the surfaces.
 
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Old 05-07-17, 07:23 AM
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I'm sure. You're right about the cultured marble staining of course.

Silicone is recommended on SS because the putty might or will squeeze out too much. Both the basket flange and the sink flange are flat, leaving just a very thin layer of putty.

That said, I trust the putty and only remember one leak on a disposer flange.
 
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Old 05-07-17, 08:06 AM
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Yes, I've had the putty squeeze out and have had to slightly re-tighten drain, but I prefer the putty t silicone.
 
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Old 05-07-17, 09:01 AM
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I think everyone would prefer putty over silicone, it's easier to work with.
You can see the point though that putty wasn't designed to be used as a gasket.
On a cast iron sink you would have about a 1/2" bead of putty, on SS the bead is virtually nothing.

Like I said, I use the putty anyway and just pay attention to leaving some under the flange.
I ignore all rules and get by
 
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