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Installation Instructions: 1.) Using a long, thin implement (such as a thin, flathead screwdriver or a nail file), pry the old gasket out of the holding area (it should dislodge easily but may need to be worked out). 2.) Slightly stretch out the new gasket. 3.) Place the new gasket on top of the holding area and work it into place in a circular motion. All Set!
Replacements Replacement gaskets / o-rings / seals for 10 ounce / oz FUNTainer vacuum insulated stainless steel food jar containers. Does Not Fit 12, 16 or 24 Ounce Containers. Replace Your Lost Or Loose Gasket Gaskets get lost periodically and get warped/worn out over time. A damaged gasket (or no gasket, at all) means a poor seal, leading to a leaky bottle. Always have a spare on hand! Made From Silicone with no BPA Our gaskets are made from high-quality, durable, food-safe silicone with no BPA phthalates, or latex.
Easy To Install Replacement gaskets for these lids are often hard or expensive to find - don't get a new lid, just get a new set of gaskets to last you 3x as long. 3-step easy installation. 3 gaskets per pack.
Viviana C.
Reviewed in the United States on March 30, 2025
De buena calidad, sirve para el modelo adecuado, mantiene bien el calor.
Ashlea Vanderwall
Reviewed in the United States on September 6, 2024
I was just cleaning out my kitchen when I realized that I had a bunch of olddd thermos containers that I havent used in years still laying around. When I realized I lost the inside seal to them I thought oh great, the whole things trash... then I thought maaaybe amazon would have something similar, low + behold they did + it works great!!!!
KissingTaco
Reviewed in the United States on September 4, 2024
The details specify that they fit the Thermos branded products. Nope, these are way too big.If you need a replacement seal for the Thermos, buy from Thermos because those fit.
Donyel Smith
Reviewed in the United States on March 24, 2024
Had a small Themos lunch hot lunch container for my kiddo that the seal went missing. It made it useless. It would leak and didn't keep anything warm. Finding these have been great. They fit good. It doesn't stay as well as the other one did, but it could be because it's new. I'm just glad that it fits and returns it to it's useful self. It doesn't leak and keeps the food hot.
fred baxter
Reviewed in the United States on January 26, 2024
Easy to install, no leaks. Hope to never need again, but knowing my kids... Would recommend.
K.C.
Reviewed in the United States on December 6, 2023
We have two Thermos stainless steel, vacuum, Funtainer 10 oz. food jar containers which we have been using for over 10 years. A gasket went missing on of the containers. These replacement gaskets fit perfectly. Now we are able to continue using our food container, rather than tossing it in the garbage.
Dora
Reviewed in Canada on September 3, 2022
Strong and durable replacement parts, fits perfectly
Customer
Reviewed in Canada on April 9, 2022
Our children use their thermoses daily and over time they either lost some of their seals or managed to damage them. You don't need to live with leaky thermoses with these replacement seals. They arrived on time and fit snuggly on the thermos lids. Good as new!
Disnarda
Reviewed in Mexico on September 24, 2020
Me parece caro su precio, pero perdí el sello de mi termo, y no puedo usarlo sin él, así que los tuve que comprar. Lo bueno es que ahora tengo de repuesto para cuando me vuelva a pasar, o se dañe por el uso :)
fiona o'connor
Reviewed in Australia on August 5, 2020
I bought these to fit the Thermos Funtastic Food Jar, and it was suggested that they would fit, but I have fitted it, and now all 3 have fallen of at school and been lost. Total waste of money. I would have been spending $11 and buying a new container.
Christopher
Reviewed in Australia on November 21, 2020
Did not fit
Sam
Reviewed in the United States on January 13, 2020
These fit our FUNtainers perfectly! We had a few that needed replacement rubber rings for one reason or another and I was thrilled to find these. The FUNtainers are not cheap - and these are a great way to give new life to your older ones. We haven't had any issues with them yet and we've been using them for maybe a week now. They seemed a little bit bigger than the original ones at first glance but it doesn't seem to have been an issue. Overall I would recommend them. They are a WAY better alternative to replacing the FUNtainers themselves!
Vance N
Reviewed in the United States on November 17, 2018
These worked very nicely on my Thermos funtainers. These are a must especially if you have the thermos for the kids and Lord know what the daycare or K staff do with the darn things. My wife lost one too.So they are pretty darn exact compared to the OEM. As one reviewer said, they can be a tad more snug to get it to seat into the groove on the lid (because the seals you need are kind of K shaped). The trick is to use a toothpick to stretch it a little the opposite end once you have the one side seated in. The stretch thins the gasket enough and it just slips right in. The last part you just tuck in and viola! I see this as a good thing because too loose makes for a less than tight seal and lets moisture and stuff hide into the groove area. This isn't a deal breaker for me at all.Overall, I'd certainly buy them again.
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