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Find or How to Replace Old Dried Out Gaskets in a Set of 4 Ceramic Kitchen Canisters Answered

We have a set of 4 ceramic kitchen canisters that are so old the foam seals, or gaskets, have dried out. I cannot find replacement gaskets anywhere. They were made by an individual, so there is no company to write to for replacement parts.

Does anyone know who sells such gaskets? Foam or rubber or silicon will work.

Or, is there a way of making replacements? I've seen amazing things done on "instructables" with silicon; molds, fake heads, toy octopus, etc. But I have never worked with it. Is it OK for a seal that will be in close proximity with salt, sugar, flour?

The canisters are glazed ceramics that some individual has made.

Attached are photos of the canister, mating surfaces, and existing gasket.

Any suggestions will be appreciated.

Thank you.

Phil Brown, Southwest Wisconsin



8 months ago

If you don't mind black...
Go to a rubber and foam place or look around.
There are several types of high density "foam" sheets available for the use in simple gaskets, vibration damper or sound dampening.
Measure the width of your gasket.
Measure the minor diameter.
Transfer the width and minor diameter to a shet of cardboard and use it as a template to cut the ring out of the new foam.

It won't fit and look ugly sticking out, so let's fix this too shall we?
Put the pot into something big enough so you can suberse it really hot water - using gloves is a good idea here.
Press the lid on under water, do it slowly as it is not that easy to get water out ;)
Once firmly in place keep pressure on the lid and take it out of the hot bath.
All should be really hot to touch if not leave in longer so the ceramic get to water temperature.
Put aside with some weight on the lid and let fully cool down to room temp.
You can speed up by spraying with cold water if you are in a hurry and know the pot will tolerate the temperature shock.
Once cooled you should have a fairly good fitting seal that will get into better shape after a few weeks of use.


8 months ago

Can you try making it with silicone adhesive? If not, try Sugru or Oogoo which is a homemade alternative. I think it'll be better.


Reply 8 months ago

The Oogoo looks like a good solution. If no one else pops up with an off-the-shelf gasket I'll probably use the Oogoo. Now that I know about it I'd like to see what it is like anyway.

Since craft fairs have people who make canisters with gaskets in them (where my wife got these) the gaskets are out there, somewhere. I've searched and searched and found all kinds of gaskets, but not the ones we need.

Thank you for the suggestion.


Jack A Lopez

8 months ago

I've read language like this before, like the sentence:

"Any suggestions will be appreciated."

Yet, I wonder: Are you really going to appreciate it when I kindly advise you that you're using a word incorrectly, or at least misspelling it?

For future reference, "silicon" is an element, the one with 14 protons.

But when we put an "e", on the end of "silicon", we get "silicone", and that is name of an elastomer, a kind of elastic polymer, used to make gaskets, and other things.


They're not the same thing. So there's the spelling, and uh, materials science, lesson.

However are there any 'ibles here on the topic of custom shaped gaskets made from silicone? Or from any kind of gasket-worthy elastomer?

Actually all I looked for, and all I found here today, are 'ibles for gaskets made from silicones.

These first two require a 3D printed mold, and castable RTV (room temperature vulcanization) 2-component (binary?) mix, silicone:



This next one uses ordinary hardware-store silicone caulk, to make gaskets with circular cross-section.


This one,
I'm not sure about the details, because it's mostly a stub for a Youtube video I haven't watched yet, but the text suggests it involves hardware-store silicone caulk, and a mold made from wood.

Regarding your question, "Is it OK for a seal that will be in close proximity with salt, sugar, flour?", I suspect it is possible to find silicones that are certified food safe when cured. The reason I suspect that, is because I think I have seen custom molds for candy, made from silicones.

I know there is silicone bake-ware, like cookie sheets, muffin molds, etc, that are sold in stores. Are those food safe? Presumably. Although I have to admit, we do not know how these are being manufactured, so it is kind of leap to assume a DIY version of this process exists, that is just as food-safe.

Hardware-store silicone caulk smells strongly of acetic acid (i.e. vinegar) while it cures, but that smell is almost totally gone a few days later, when the cured caulk is hard and rubbery.

By the way, there may be other castable elastomers out there besides silicones, but I have not done an exhaustive search, so I have to admit don't know for sure about the complete, uh, state of the art, for making cookie jar gaskets.


8 months ago

Photo #2 shows the existing gasket.