Some essential homebrew supplies are pretty unassuming. For instance, you’d never guess how important this simple rubber stopper is.

This #7 1/2 solid rubber stopper is designed for easy insertion into the mouth of your carboy or fermenter. Once you pop it in, you can be sure that your fermentation is free from the evils of oxygen.

Don’t take chances with your homebrew. Supplies don’t come with much more bang for your buck than a solid rubber stopper!

Please note: For best results, measure the diameter of the mouth of your carboy or fermenter and compare to rubber stopper measurements to find a good fit.

• Made of rubber
• Creates an airtight seal in the mouth of your carboy or fermenter