This silicone is great for so many things. It's safe for use in potable water, aquariums, automobiles.
It's non-curing sealant / lubricant.
Dow Corning Molykote Silicone 111 Valve Lubricant and Sealant 5.3 Ounce Tube
I use it on bolts, hoses, gaskets, and more.