備用填充蓋組件含矽膠塞

The silicone bung fits snugly and doesn't leak, which was my main concern. Took less than a minute to swap out the old one.

The cap snapped right into place with a satisfying click, and the silicone bung seals the opening perfectly without any wobble.

The silicone bung fits snugly and feels well-made, so no more drips when filling. It was a bit fiddly to install at first, but once on, it works perfectly. Exactly what I needed to fix the old one.