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Old 09-24-2015, 01:16 PM   #31
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I am glad you have the disposal installed leak free. As someone who has installed literally thousands of disposals in the last 25 years, some things in this thread trouble me.

There was a rubber washer that came with the original disposal flange that had to be installed under the sink between the fiber washer (yes, cardboard) and the bottom of the sink. It was not installed thus you had your leak. The fiber washer acts as a slip sheet to prevent the tightening plate from binding against the rubber washer. Fiber washer should never be re-used, always replace both the rubber and fiber washers when removing and repairing. No rubber washer=no seal. Lucky it lasted without leaks for even a day.

No residential disposal, especially Insinkerator brand, has a threaded dishwasher connection nipple. "D-nagorg" told you the correct way to plug the dishwasher connection nipple in reply #21: "If not threaded, a short hose nipple with a bull plug in it with hose clamps to plug it." Do it that way, no other way will work.

I understand you have already completed the repair in a jerry-rigged way and it is holding water, good. I wanted to clarify these couple of issues to educate anyone in a similar situation who may look to this thread for answers.

Last edited by SHR Plumber; 09-24-2015 at 01:19 PM.
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Old 09-24-2015, 03:28 PM   #32
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Quote:
Originally Posted by rjniles View Post
Actually this is plumber's tape:


What you are discussing is Teflon tape or thread seal tape.
Do a google search.

You will find that plumbers tape is referenced as either the Teflon tape, or the metal strap.

So we are both correct, but as I already knew what the OP had did I addressed their question correctly.


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Old 09-24-2015, 04:51 PM   #33
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Quote:
Originally Posted by de-nagorg View Post
Do a google search.

You will find that plumbers tape is referenced as either the Teflon tape, or the metal strap.
Goes to prove you can not trust Google searches to produce correct answers. What Google shows is that many people falsely refer to PTFE (teflon is a Dupont registered brand name) tape as "plumber's tape". That is wrong and just because uninformed people call it that does not make it so.
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Old 09-26-2015, 08:53 AM   #34
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I'm not a plumber, just installed a few. My thoughts are:
1. The sink drain hole recess is not centered. I think you said that one side of the recess wasn't wide enough for the drain basin flange to seat? So is the flange sitting on the lip of the drain hole? That is a potential leak, since the putty is not under pressure. I'd grind the basin flange to fit. When the putty starts to dry out, it will leak. Sand or file the edge finger smooth.

2. About the usual rubber gasket and the cardboard washer: I assumed the rubber went on top (under the flange-replacing the putty) and the cardboard on bottom. This may be what I saw in the instruction long time ago. But didn't trust the rubber (one time leak). Always used putty and used the rubber as a putty dam, then cardboard washer to reduce friction when tightening the lock nut.
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