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Re: [Shop-talk] Sealing toilet tank mounting bolts?

To: Jim Franklin <jamesf@groupwbench.org>
Subject: Re: [Shop-talk] Sealing toilet tank mounting bolts?
From: Jeff Scarbrough <fishplate@gmail.com>
Date: Thu, 21 Nov 2024 09:49:54 -0500
Cc: Shop Talk <shop-talk@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: shop-talk@autox.team.net
References: <70796B48-8AF3-4A54-A957-5643E302F9F1@groupwbench.org>
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So, it looks like the grommets don't compress enough because the toilet
tank rests on the center hole before they squeeze out enough?  If so, I
would either:

A - Use some silicone sealer (for kitchens and bathrooms) around the
grommet in the tank hole as I put it together, or

B - Use a large plastic washer as a shim between the grommet and the bowl
top ledge.  This would require some careful guesswork, I reckon, to get
the right thickness to do the job correctly.

I might go all SAT and choose "Both A and B".

I don't understand why they don't want you to use sealer, as I assume they
are replacing the defective parts.



On Thu, Nov 21, 2024 at 8:43=E2=80=AFAM Jim Franklin <jamesf@groupwbench.or=
g> wrote:

> I bought 3 Kohler Cimarron toilets for a job I'm doing, because the one i=
n
> my house is great. Well, the new ones are very different and I should hav=
e
> read all the reviews on the Home Depot site.
>
> The tank-to-bowl connection is made with 2 bolts that pass through
> grommets. These grommets expand as the bolts are tightened, sealing the
> holes in the tank through which they pass. Problem is, quality control le=
t
> some tanks through with holes oversize enough that the grommets won't sea=
l.
> Kohler even sent me a new supposedly redesigned grommet kit, which slowed
> down the leaks to a drip once per minute. They said they'd send a new tan=
k
> but can't expedite it, so we're looking at after Thanksgiving, and no
> guarantee that the new tank won't also be mismanufactured.
>
> My thought is to use a sealant on the grommets. Kohler said "we don't
> advise that", but I really need to wrap this up. Is there a
> rubber-compatible, submergeable sealant that will work in this applicatio=
n?
>
> Another thought I just had is to add washers on top of the bowl where the
> bottom of the grommets sit so that the grommets are compressed another
> 1/16". But I don't want the grommets to then start leaking on the inside
> along the bolt if I overcompress and they open up.
>
> There are images near the bottom of this page:
>
>
> https://www.faucet.com/kohler-k-31615-white-cimarron-1-28-gpf-toilet-tank=
-only-left-hand-lever/f4091621#reviews
>
> thanks,
> jim
> _______________________________________________
>
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<div dir=3D"ltr">So, it looks like the grommets don&#39;t compress enough b=
ecause the toilet tank rests on the center=C2=A0hole before they squeeze ou=
t enough?=C2=A0 If so, I would either:<div><br></div><div>A - Use some sili=
cone sealer (for kitchens and bathrooms) around the grommet in the tank=C2=
=A0hole as I put it together, or=C2=A0</div><div><br></div><div>B - Use a l=
arge plastic washer as a shim between the grommet and the bowl top ledge.=
=C2=A0 This would require some careful guesswork, I reckon, to get the=C2=
=A0right thickness to do the job=C2=A0correctly.</div><div><br></div><div>I=
 might go all SAT and choose &quot;Both A and B&quot;.<br><br>I don&#39;t u=
nderstand why they=C2=A0don&#39;t want you to use sealer, as I assume they =
are replacing the defective parts.</div><div><br></div><div><br></div></div=
><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Th=
u, Nov 21, 2024 at 8:43=E2=80=AFAM Jim Franklin &lt;<a href=3D"mailto:james=
f@groupwbench.org">jamesf@groupwbench.org</a>&gt; wrote:<br></div><blockquo=
te class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px =
solid rgb(204,204,204);padding-left:1ex">I bought 3 Kohler Cimarron toilets=
 for a job I&#39;m doing, because the one in my house is great. Well, the n=
ew ones are very different and I should have read all the reviews on the Ho=
me Depot site.<br>
<br>
The tank-to-bowl connection is made with 2 bolts that pass through grommets=
. These grommets expand as the bolts are tightened, sealing the holes in th=
e tank through which they pass. Problem is, quality control let some tanks =
through with holes oversize enough that the grommets won&#39;t seal. Kohler=
 even sent me a new supposedly redesigned grommet kit, which slowed down th=
e leaks to a drip once per minute. They said they&#39;d send a new tank but=
 can&#39;t expedite it, so we&#39;re looking at after Thanksgiving, and no =
guarantee that the new tank won&#39;t also be mismanufactured.<br>
<br>
My thought is to use a sealant on the grommets. Kohler said &quot;we don&#3=
9;t advise that&quot;, but I really need to wrap this up. Is there a rubber=
-compatible, submergeable sealant that will work in this application?<br>
<br>
Another thought I just had is to add washers on top of the bowl where the b=
ottom of the grommets sit so that the grommets are compressed another 1/16&=
quot;. But I don&#39;t want the grommets to then start leaking on the insid=
e along the bolt if I overcompress and they open up. <br>
<br>
There are images near the bottom of this page:<br>
<br>
<a href=3D"https://www.faucet.com/kohler-k-31615-white-cimarron-1-28-gpf-to=
ilet-tank-only-left-hand-lever/f4091621#reviews" rel=3D"noreferrer" target=
=3D"_blank">https://www.faucet.com/kohler-k-31615-white-cimarron-1-28-gpf-t=
oilet-tank-only-left-hand-lever/f4091621#reviews</a><br>
<br>
thanks,<br>
jim<br>
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Archive: <a href=3D"http://www.team.net/pipermail/shop-talk"; rel=3D"norefer=
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<br>
</blockquote></div>

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