My
boat, 42 foot inboard
diesel sailboat, has a PSS dripless seal that was put in at the last haulout. I am not that shot in the butt with it, and am considering going back to a stuffing box with the new graphite packing.
Mine didn't exactly fail, but it slipped, letting a torrent of
salt water spray all over my
engine, one day. It was easy to adjust to where it was supposed to be, but I never had a stuffing box spray my
engine room with
salt water.