デイオフタンブラー / トラベルタンブラー 500ml シリコーンパッキン（Aタイプ）

I was worried about getting a good seal after dropping my tumbler, but this replacement packing clicked right into place and fixed the leak completely. The silicone feels just as sturdy as the original, which is exactly what I needed for my daily commute.

The old seal had started letting coffee leak into my bag, but this silicone packing seats perfectly into the lid groove on my 500ml tumbler. I’ve refilled it about a dozen times since installing it, and not a single drip so far—the fit feels reassuringly tight.

Bought this to replace a worn seal on my 500ml tumbler and it fits perfectly, no leaks at all. Only gave 4 stars because the silicone feels a bit thinner than the original.