I purchased a Bemis elongated toilet seat at Home Depot.
When I got home I discovered that the toilet seat hinge bolt is 1/4 inch but
the hole in the toilet is 5/8 inch. I returned to Home Depot and was told
they only sell seats with a 1/4 inch bolt.
They recommended a product called porca-fil (or porcafill), but they no
longer stock this molding product to help fill the oversized hole.
Do I really need this filler? Isn't there a better way?
Look in hardware aisle for nylon bushings, or cone-shaped washers, or
even replacement nylon bolts of the correct size. If they don't have the
right size of those, you can maybe fake it with short pieces of the
clear plastic tubing like used for condensate lines or fish tanks. Or
maybe even several layers of heat shrink tubing. Just don't use anything
made of metal- it could actually fracture the porcelain if stressed just
wrong. In the old days, when brass bolts were used, they had soft
cone-shaped washers keeping the bolt centered in the hole. I presume
these are plastic bolts with covers over them? That will hide whatever
You have my sympathies- I need to do the same thing to my thrones.
Well, they're not tapered much but they're tapered a little bit. I
think they're tapered the same amount as mine (Two of seats came with
platic bolts that are thicker, but still not as big as the holes.
When I tighten the bolts, the seats don't move around. Oh yeah, one
has brass bolts that are about a quarter inch.)
I've just sqirted in silicone bathtub caulk around the bolts before
tightening the nuts.
It's worked for me. Not "rock solid", but it does keep the seat from
angling off center, and will pull out easily enough the next time you
need to change out the seat.
I finally got a much appreciated (and very detailed) reply from Bemis Mfg.,
who manufactures the toilet seat with the hinge bolt problem (toilet seat
**** FROM BEMIS ***
I think the problem is not getting the plastic nut tight enough. I suggest
you try replacing the plastic nut with a 3/4 to 7/8" O.D x .25" I.D.
stainless steel flat washer, and two (2) 5/16 x 18 stainless steel nuts on
each side. Then you will be able to put higher torque on the nut without
fear of stripping the plastic nut.
You could also put a small amount of RTV silicone sealant on the underside
of the square plastic hinge gasket as you assemble the seat. This will help
hold the gasket on the china. Then assemble the stainless steel washers, (1
per bolt), against the china from underneath, and then one of the 5/16 x 18
nuts. Tighten until snug. Then put the washer and nut on the other side
and tighten snug. Then, working from one side to the other side, use a
wrench and tighten the nuts until they are very tight. Test the seat side
to side as you tighten, keeping it straight. I think the torque will start
to cup the stainless steel washers, thus centering and holding the bolt
within the hole. This will help keep the bolt from moving within the
oversized mounting hole. After the seat is good and tight, then run the
additional nuts up on each side and tighten, (double-nut), to keep the nuts
from loosening. This should take care of it.
If this does not work, I can machine you some bushing spacers to put in the
holes, but you will need to use a piece of 5/8" diameter wooden dowel and
test it in the hole to provide the correct outside diameter. If the
bushings I make are tight in the mounting holes, they could force the china,
and break it.
Can you give the metal hardware approach a try?
Bemis Mfg. Co.
211 Forest Ave.
Sheboygan Falls, WI 53085
P 920 467 5336
F 920 467 5304
replying to Scott T., Randy Brown wrote:
Hi John. My problem is that the seat snaps loose at the hinge when I close the
lid. 2 of 3 have this problem. 1 has been replaced and the new one has the
problem. Any suggestions?
Try contacting them on the Internet. When small parts are missing or not
present I e-mail the company and have had excellent success with a majority
of them quickly forwarding the item needed at their expense.
When this first happened, I called the Bemis toll-free number which I found
Their suggestion was to return the two recently purchased toilet seats to
Home Depot and ask them to order two new seats with larger hinge bolts - 1/2
inch vs. 1/4 inch.
Not my favorite solution, but at least it is an option.
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