shaft log with dripless seals for centurion boat

#Shaft log with dripless seals for centurion boat free#

PYI offers complete PSS kits that include installation instructions or they can be installed at most yards.

#Shaft log with dripless seals for centurion boat free#

Installation-wise, shafts that are not free of corrosion, nicks, pitting, etc., may be difficult (if not impossible) to retrofit with a lip seal unit. The constant contact between the rubber seal and rotating shaft means the seal will eventually wear out and that some shaft wear will likely occur in the process. Lip seal units are less expensive than face-seal models and while they have a fair amount of tolerance to shaft misalignment and vibration, they have disadvantages as well. The seal fits snugly against the shaft to prevent water entry and remains stationary with the shaft rotating inside it. Lip seal units employ a synthetic rubber sleeve encased within a metal housing. There are two primary types of dripless shaft seals - lip seals and face seals. Let’s take a look at maintaining and troubleshooting these modern marvels. A properly maintained seal is critical for an inboard propulsion system.Īdvocates of dripless shaft seals are quick to point out their benefits over conventional stuffing boxes (no leaks, no flax to replace, no shaft scoring) but the zinger is always the same - “they’re maintenance free.” While it’s true dripless shaft seals such as PYI’s popular Packless Sealing System (PSS) require less care than a traditional packing gland, nothing on a boat is truly maintenance free.