I don't know if you'd dare try this
https://www.amazon.com/SP-400-Corrosion-Inhibitor-Aerosol-Amber/dp/B07FZ53KFF
crc sp-400 is interesting stuff, as a corrosion inhibitor it's perhaps the best for durability;
dries to a thin wax coating that isn't flammable (I've tried)
It's made for machinery storage outdoors. I use it to protect metal that will rust, but isn't feasible to paint. Comes in super handy for undercarriage, brake lines, rusty parts, etc. I like it so much I got the "forever" 5 gallon bucket (I hated how the spray put so much into the air)
It's nasty stuff, basically cosmoline in a solvent to make it spray-able. Do NOT breath any of the mist.
In the spray version, I imagine the solvent will evaporate pretty quickly and not have too much effect against the rubber