How long can a silicone and white spirit solution be stored without hardening?

I’ve heard that some people use a mixture of silicone and white spirit to waterproof their gear.


How long this solution can be stored without hardening if it is stored in a closed hermetic bottle?


If the solution does harden over time, what would be the cause of this? Does anyone have any information or experience with this?


(Additionally, since it’s not really possible to preserve an opened tube of caulk ―which I’m only using for this purpose―, I wonder if I can increase my chances of not spoiling it by storing it in this state).




"White Spirit" or [naphtha](https://en.m.wikipedia.org/wiki/White_spirit) will [*dissolve*](https://www.pfonline.com/articles/silicone-oil-removal) silicone oils. Water will not.
Therein lies the secret of using silicone as a water proofing agent.


It is applied, much like paint, and the solvent evaporates, leaving a film.


Best chances of [preserving](https://www.denbraven.com/en/knowledge-base/chemical-resistance-silicones/) it would be to store in a cool place, away from sunlight or heat, in a tightly sealed container, again much like an oil based paint.


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