Bung- Pure Tan Gum Rubber- Lg

MSRP: $16.99
(You save $2.00 )
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Solid food grade pure tan gum stopper. Can be easily drilled to fit airlock, thermometer, etc.
Made of chemical tolerant pure tan gum

Although often referred to as a "rubber bung" or "rubber stopper," our bungs are actually made from food grade pure tan gum instead of rubber. We use this particular material because it is highly chemical tolerant, specifically to ethanol, whereas rubber is not.

Bottom- 2 7/16", Top- 2 31/32"
Fits our High Capacity column

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  • 2
    Not a perfect fit

    Posted by Jake on Dec 19th 2017

    This is one of my least favorite parts of the high capacity column. The stopper is just slightly too small and can be pushed completely into the top of the column and I'm afraid it leaks a bit of steam. It is also just too tall which causes it to obstruct the outlet opening just slightly. It has also started to disintegrate a bit around the edges after only a few dozen runs. The column is otherwise amazing and this is the weakest part of the design.