Securely bung your full-size barrels with this locking bung. Great for tight bunging barrels while rolling them on their side, moving barrels from location to location, or simply for peace of mind that this bung will not accidently get knocked out of place.
A stainless plate embedded in the silicone causes the bung to expand outward when tightened. This creates considerable pressure against the bung opening, ensuring a super solid seal. Use a crescent wrench or 1/2" driver to tighten the nut on top of the bung.
Bottom of bung measures 1.5" and the top of the bung measures 2.5".