# 7 Bung – Rubber Stopper – Solid Bon marché

Description

# 7 Bung – Rubber Stopper – Solid
When it comes to fermentation, the key is to keep the oxygen away. This rubber stopper may look pretty simple, but it plays a very big role within the process. Constructed from a solid rubber material, simply insert this stopper into the mouth of your carboy and you have an oxygen free zone.

#6.5 Solid Dimensions: 1 17/16” Bottom Diameter; 1 3/16” Top Diameter