3 Inch Pure Tan Gum Rubber Bung Pre-Drilled No. 13.5

3 Inch Pure Tan Gum Rubber Bung

3 Inch Pure Tan Gum Rubber Bung stopper. If you need a bung for a 3″-diameter column, this is it. This bung is drilled with an opening for a digital thermometer or some thermocouples.