Rubber Stopper - Solid Carboy Bung (#6.5)

#6.5 - This rubber stopper is for typical glass carboys and our plastic buckets.
Rubber stoppers provide an air-tight seal to carboys, necessary for proper fermentation. BPA free and made out of Food Grade materials.
Maximum Temperature: 70°C (158°F). Size: 6.5 Top Diameter: (34mm 1-11/32') Bottom Diameter: (27mm 1-1/16') Length: (25mm 1') 
This bung is solid. There is no hole for an airlock.