In my location lock tite 680 is hard to come by plus ridiculous in price as it is only available in the large bottle so $$$ . Buying extra tubes at the price they offer it is a no brainer as if it goes bad a small tube hurt a lot less the a $$$ large bottle going bad . As I have been told there is a shelve life

Stuff works, I've had prior experience with this product and it holds up under heat and vibration.