FDA approved food grade PET shell and liner preserves the original taste of the wine as kegged at the winery. Shelf life of two (2) years untapped, tapped still wine shelf life is six (6) months, tapped sparkling wine shelf life is two (2) months. Once empty the keg is 100% recyclable OR it may be re-purposed for agricultural or cleaning applications. One 19.5 liter keg is the equivalent of 2.25 cases of either 750 ml or 1.5 L bottles. Steel keg wines use gas blends in constant contact with the wine to propel it from the keg thereby changing wine taste over time. Our PolyKegs use the same connection as all domestic draft beers (US Sankey D) and are compatible with all draft box systems.