Spigot has a white polypropylene lock nut, TPE plug. Fits all NALGENE® carboys with spigot and selected NALGENE tanks with spigot; use to replace spigot to provide leakproof seal when autoclaving liquids in a carboy. Also useful when handling could damage or accidentally turn on spigot or when spigot-less carboy is required. Included with all NALGENE carboys with spigot.
