Solid Silicone Bung

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Solid Silicone bung that fits most oak barrels and the hole in most variable volume lids.
The silicone is very pliable, making a great seal. They are also very easy to clean and sanitize.
Large is for an opening 1-3/4" to 2-5/16"
Medium is for an opening 1-1/4" to 1-7/8"
Small is for an opening 1-1/8" to 1-1/2", great for 3, 5, 6, and 6.5 gallon glass carboys.