Drilled Rubber Stopper #7
A drilled and tapered rubber stopper with a 9 mm center hole. The #7 rubber stopper fits most carboys.
Although the #7 rubber stopper will fit the opening of most carboys, it will seat higher than the #6.5 rubber stopper. Because it sits higher, there is little risk of pushing the stopper through and into the carboy, but because it sits higher, there is a greater risk of it getting accidentally knocked off.
- Top diameter: 37 mm
- Bottom diameter: 21 mm
- Height: 24 mm