Home / The Sealing Power of the Brew Tube
The Sealing Power of the Brew TubeAs an added bonus, we've included a removable, food-grade silicone sealing ring with your Brew Tube. Watch a 24--second video below.

The ring creates a leak-proof, airtight seal between the jar, the Brew Tube, and the filter. If you're not moving / shaking / jogging / rollercoastering with the jar full of liquid, you may not need the ring. However, if you want to take it camping, shake it up, take it dancing on Saturday night, or just don't want any oxygen getting to your coffee - this is for you. We really do like you that much.