BOSORIO 4 Pack Gaskets Compatible with ThermoFlask 16oz 24oz 32oz 40oz Water Bottle with Straw Lid, Replacement O Ring Rubber Seals Part（Not for Spout Lid and Chug Lid）

They fit just right (compatible as promised), and installing them was a breeze — no wrestling, no weird stretching, just pop them in and get sealing. The material feels sturdy but flexible, and they’ve held up great after multiple uses and washes. Honestly, it’s the kind of purchase you don’t think much about until your old gasket gives up mid-smoothie and you end up wearing half your breakfast. These saved the day — and my shirt. Great value, solid quality, and now my blender is back in business. Would definitely buy again... but at this rate, I won’t need to for a while!

Absolutely perfect replacements for water bottles. I rather replace than wash.

Very happy! These gaskets do fit the 24oz straw lid ThermoFlask. Wish they came with the small air vent plugs.

En realidad no es compatible con termoflask Tuve que ponerle dos. A ver si funciona Por lo menos se sintió que sello la tapa

Bought these to replace what my kids had inevitably lost lol they work perfectly!

I bought these after I purchased replacement from thermoflask, and they were so much better. I have a stash of thermoflask bottles for our family, and I recently purchased a bunch of replacement o-rings for them directly from the company. After washing them, they were all warped, and realized they were not the same as the original ones. So I decided to try these and they are an exact replacement. They go into the cap so easily and we have had no leaking issues. I’m definitely buying more!

Fit my kids two pack of Thermo flask bottles from Costco perfectly! Love to have in case gaskets rip or get too moldy.

Well, I was hoping for the best but they do not seal properly. Disappointing