Mr O-Ring228 Silicone O-Ring, 70A Durometer, Red, 2-1/4" ID, 2-1/2" OD, 1/8" Width (Pack of 10)

We have a couple of Nissan Thermos JMQ400P 14-oz travel mugs. These are great mugs, but unfortunately they're no longer made. After a bit of research, I found this replacement O-rings, and I'm happy to say they're a perfect fit!! Snug, leak-proof, easy to install - no issues at all.

Great quality, fit exactly for what I needed it for, cost was cheap. Will definitely be buying this product again.

Other previous reviews regarding how well this gasket works to replace the seal in Nissan (Thermos) stainless steel travel tumbler are correct. I bought a package of 6 gaskets for me and my sister. I have the 14 oz tumbler (JMH400SS4) and my sister has the 18 oz tumbler (#JMH550SS4). Our tumblers do not have the handles but the seal/gasket apparently is the same as other reviewers' travel tumblers (with handles). A note for Thermos/Nissan: You really would have a market for replacement seals if you were interested. Note for Amazon's retailer Small Parts: Thank you so much for having this great fix at a great price!

I bought these based on the recommendation of a previous reviewer. The seal on my Nissan 14oz Leakproof Insulated Travel Mug broke when I was washing it, and without the seal, it wasn't leakproof. These work great. Thanks, previous reviewer!

Having a spill proof mug is essential especially when driving or on a job site. This product is an Excellent replacement gasket for the Nissan Thermos mug. I have looked high and low for the correct diameter gasket for this mug in the past and succumbed to having to buy a new mug. Now using these gaskets-problem solved, but as luck would have it Thermos has changed the design of the Nissan mug. This works for the previous design that has been on the market for over 10 years.

I have a coffee tumbler that I greatly enjoy using except eventually it started dropping coffee on me when I'd take a sip. Unacceptable! So I researched how to fix the problem, and I saw a recommendation to use this product to stop the leak. I bought these silicone rings, and they work like a charm! No more coffee leaks!!! Now I can keep using my favorite coffee tumbler without fear. :)

I got this to replace the worn-out rubber ring on my Nissan Travel Mug. The inside diameter is correct, but it's not quite as thick as the original ring, so the top screws in farther. It still work fine and is definitely better than the worn-out ring. Just wish it was a tad thicker to make it a closer match to the original. Really, Nissan ought to offer replacement rings.

Works as a replacement gasket for the (discontinued but still useful) 14oz Stanley Adventure Vacuum container. Doesn't leak

I think this thermos cup is no longer available. I've used this as my daily travel mug for the past 20+ yrs of commuting to work. Original seal was getting a little gungy and swollen and was having problems letting the coffee come out of the mug. . This seal fits perfectly. Seals up watertight, but allows coffee to flow when you crack the lid open one turn. Thank you Amazon prime and Stirling seal company... Now to find a spot to store the extra seals.

Excellent. Just what I needed