Narrow Neck Demijohn Rubber Cap Ø57mm Wine Making Home Brew

Narrow neck demijohn rubber cap \u00D857mm\nLength: 6 cm\nWidth: 2 cm\nHeight: 9 cm\n\nBefore using wash them thoroughly with warm water and washing-up liquid, then dry them thoroughly. This is to remove the layer of silicone left over from the production stage that may cause the rubber cap to slip off during the fermentation of the wine.The hrubber caps are very stretchy, which makes it possible to use their various vessels, they can serve as a tight closure of a wine balloon or, after cutting the plug, as a stopper with an opening for a fermentation tube.