Closure (wine bottle)

Closure is a term used in the wine industry to refer to a stopper, the object used to seal a bottle and avoid harmful contact between the wine and oxygen.

They include:

The choice of closure depends on issues such as the risk of cork taint, oxygen permeability and desired life of the wine. Another factor is consumer reaction, with the wine-buying public in Australia and New Zealand positive to alternative closures, while opinion is divided among consumers of the United States. In Europe, perceptions that associate screw caps with low-quality wine may be declining.

Synthetic wine bottle closures may allow for a controlled oxygen transfer rate.