PSS
Hi Jack,Welcome to the Hunter family if you buy the boat. I'm on my second Hunter, as I just sold my H34 a few months ago and bought a H40.5.Boats with inboard engines have to provide a way to allow the prop shaft to go through the hull. The opening around the shaft is then sealed by using a stuffing box, keeping most of the water on the outside; a good thing for boats. The stuffing box contains a material such as flax or a tephlon clay, and this prevents water from entering the bilge. The stuffing box however does require a slight drip to keep it cool while the shaft turns, and as part of the maintenance, you have to adjust the packing nut to control the amount of water that drips into the boatThe dripless seal is a specially designed shaft seal that eliminates this dripping. The advantage is that there is almost no maintenance, and your bilge stays dry meaning less odors. I installed one on my boat and I really like it a lot. I have the link to the PYI site, as they are the leading manufacturer of dripless seals.Hope that helps.