Experience with Dripless Shaft Seals
I removed a PSS from my boat. At a certain RPM engine vibrations would cause serious leaking. Also the potential for a catastrophic bellows failure kept me awake at night when away from the boat.
Consider "Drip-Less" moldable packing. It is a blue putty stuff that goes between 2 rings of flax in your standard packing gland. No drips, 1 adjustment in 2 years.