Yes you can re-use the gaskets.
If you used new ARP bolts or studs check out their tech manual on line to be sure you have cycled them correctly and you won't have to re-tork.
Cometic also has the new Viton Rubber coated aluminum gaskets now available for SB and BB in .030, .042 and .060 for Oil Pan, Intake, Timing, Water pumps all of course reusable No Silicone or glue required.
