I have a pair of Stanleys that were originally owned by my grandfather. They came as a set in a nice leather case with a metal sandwich tin in between. They both had the original cork stoppers. After sitting in my garage for years, last year I decided to take one out and use it. Unfortunately I was unable to get the cork stopper out. Like the genius I am, I applied too much force and broke the stopper off at the mouth of the bottle. I had to use a knife to cut out the piece that remained. Anyhow, I began the search for a new cork stopper. I sent Stanley an email detailing my plight. When I received a reply from CS asking for my mailing address I was more than elated. About a week later I received a brand new thermos in the mail! Apparently, they have a lifetime warranty, and they honor it. The new model doesn't have a cork and doesn't hold the sentimental value of the other thermos, but it works just fine for my purpose. I will continue to buy from Stanley because I appreciate good CS. If you have one that leaks, email them. I'm betting they will take care of it.