Thread Sealant for Coolant Parts?

One of the things that I suspect most of us bo is not follow the instructions regardless of the sealer. Most of the silicone say apply, let set some, tighten part. Others day let dry for 12 to 24 hours before use.

I replaced a water pump and got done for the night at the point right before adding coolant, allowed 12+ hours of dry time, not a drop. In the past I would have refilled and fired it up within minutes of torquing the last bolt