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Saving Tung Oil

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Flyonline:

--- Quote from: Azmdted on September 17, 2020, 01:06:08 pm ---I can't speak for tung oil, but in wine making many folks add nitrogen to prevent oxidation of the wine during various stages.  I think nitrogen is an inert gas.  On my Tru oil, I buy the smaller bottles, keep the foil safety flap attached, punch a small hole for a drip to come out and then store the bottle with lid on upside down.  That minimizes air contact during use and storage.

--- End quote ---

That's true, but generally we use CO2 because it does a slightly better job in being heavier than air sits on the top of the surface whereas N2 is the same density as air, so more likely to blow off. N2 is usually used in bottle i.e. filling and once opened but there are other products (usually argon, CO2 and N2 or blends) available. You can also buy pressure cans of this specifically for opened wine bottles, but they're not cheap.

That said, we also have to refresh the CO2 periodically because it will get taken up by the wine and/or dissipate - even through sealed stainless steel tanks, so I'm betting your jars/tins will also leak whatever gas you put in there as well.

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