デイオフタンブラー 900ml シリコーンパッキン

Fits perfectly into my tumbler lid and the silicone feels durable, not flimsy like some replacements I've tried. No more leaking after I swapped out the old worn one.

I was worried the gasket might be tricky to install, but the fit was snug and it sealed the lid perfectly. My ice water stayed cold for hours after replacing the old worn-out one.

The two gasket sizes lined up perfectly with the tumbler’s lid and base—no stretching or forcing needed. It’s a small part, but it’s made a real difference in keeping everything sealed tight after months of use.