| I've cleaned my inflators twice and did not use any sort of silicone adhesive to put them back, and there's no bubbles, leaks, etc... What I've made sure though every time is that the (two) tie wraps I use are the thick ones, and that I fasten them pretty tight. You would only need silicone adhesive if the rubber hose was larger in diameter than the inflator connection, so that it would fill any voids at the interface. Since that's not the case ie hose diameter is slightly smaller than the inflator end, there will be no significant voids at the interface and therefore you don't need to use any adhesive.
Spiros |