Parts Shop Replacement Thermos Stopper For Stanley

This one fits and does not leak. I did add a touch of coconut oil to prime rubber.

A little loose but only a little more than the original. NO LEAK. Stanley does not sell or even have this stopper. They want you to buy a new bottle. “Made in China”. 60 dollars US for an 8 dollar part. Wasteful!

I bought this as a replacement for my Stanley thermos when the original one went missing. It first perfectly.

This is a direct replacement for the Stanley RS41 stopper used on the classic 16oz thermos. As well as many other Stanley products. It fits and is functional. Although it is a lesser quality build than the original. The Threads arent cast as well, so it tends to get crooked and can easily be tightened too tightly and become loose. The rubber seal was installed backwards on mine, but was easy enough to remove and reinstall correctly. The plastic itself is of similar quality, just poorly cast. I have used it for 7 days. And it keeps my coffee nearly as hot as the original stopper. But not quite as hot. On a budget... This will fit your old reliable stanley and keep your coffee hot for 8-10 hours. And gives you time to shop for an OE quality replacement.

It was a perfect fit. No issues. I get to use my thermos again.

The only way I could get this stopper to fit my Stanley was by removing the silicone gasket… but if you remove the gasket, it leaks (as one would expect it to do). If they made the gasket just a little bit smaller, this stopper would fit and function perfectly.

This isn't an OEM stopper. I knew that but took a chance anyway. Unfortunately the threads aren't designed correctly and when you tighten it down the threads slip and it never fully tightens. I learned this the hard way & my coffee leaked everywhere the first time I used it. I'm not going to return it because it came with a nice gasket that I installed on my original stopper so either way problem solved.

Better than Stanley one.