Does a wine bottle stopper require tevillah?
It seems from the Sefer Pischei Halacha page 100:25 that a cover of a utensil (non attached) does not require tevila (immersion in a Mikva) even though made out of metal. However, a cover of a pot which many times gets splattered by food will require tevila. See Rama YD 120 seif 5,Biur HaGra 15,and Aruch Hashulchan 32.
It would seem that a wine stopper would not require tevila since it is not the norm for wine to touch the stopper. Of course ,CYLOR.
Another source: Rav Avigdor Nebontzol in Shu"t M'Tzion Tetze Torah pg.294 was asked about a metal cover(stopper) that keeps wine fresh,if it needs tevila.Rav Nebontzal answered it seems that it would not need tevilah.
In footnote 203 it brings Kuntres Kitzur Hilchos Tevilas Keilim seif 20 which brings Rav Eliyashiv who held that if the cover is there to help the food(drink) not go bad like a carbonated drink or wine that might evaporate then it would need immersion.
However,of the cover is there just to be shomer over the food (drink) then it would not need tevilah. So says Sefer Tevilas Keilim 11:63 that a cover which is a shomer over the food would not need tevilah.
However ,in Sefer Ohalei Yeshurun pg.45:68 notes that according to Rav Moshe one should be tovel covers of storage utensils without a bracha.
Short answer: Likely yes.
Any utensil that comes in direct contact with food requires tevila.
- Items that are completely made out of unglazed earthenware, wood, or plastic.
- Disposable items.
- Utensils that were never owned by a non-jew.
Assuming it is not covered by any of the exceptions, whether or not it needs to be toiveled with a bracha depends on a few different factors.
- Vessels only used for the storage of food are toiveled without a bracha. I don't know the exact design of your stopper, unless it actually pours wine, it would likely fall into this category. (maybe not - I'm not sure, but a in a safek we don't say a bracha anyways. Not that this is necessarily a safek.)
- It also depends on what material it is made out of. Gold, silver, iron, steel, copper, tin, brass, lead (was used in biblical times, not really reccomended nowadays), glass, pyrex, corelle and crystal require a bracha. Corningware, porcelain china, enameled pots, teflon coated pans and aluminum vessels are toiveled without a bracha.
Granted, there is an issue if a stopper/cover needs to be toiveled at all. See sam's answer which discusses this. However, I would argue (see comments) that such a stopper is definitely meant to be touched by the liquid. Wine bottles are often stored on their side, and just from moving a bottle around wine often splashes into the cork. Therefore, that should not prevent it from requiring tevila.
In summary, unless your wine stopper falls into one of the exceptions, it would need tevila. Whether or not it needs a bracha depends on the design and material (if it actually pours wine, a bracha is required) I don't think it wouldn't need tevila because you might say the cover doesn't touch the wine, but as always, CYLOR.
Source: Kashrut.com (Reviewed by Rav Belsky zt"l)