This is leaking I don't kbow name of it

[Capt.Ty]

I'm trying to figure out what this is so I can replace it or if I have to replace it I managed to tighten the clamps and it seems like its not leaking . also what causes this too happen ?

[Sailmonkey]

It’s this

http://www.shaftseal.com/

Where is it leaking from? There is an occasional need to adjust the position of the rotor

[captstu]

The thing is a shaft log. Your hose clamps are in the wrong place. - should be snug against the aft end. If it is still leaking after that, the seal disk may have failed. The clamp toward the water is far enough back to have damaged the bellows.

I put this one on:

http://www.boatersland.com/pss02-100...kaArVsEALw_wcB

[Suijin]

You better learn what it is pretty quick. It's a very important part of the boat and if you don't know how to maintain it and adjust it you could run into a very serious problem.

The hose clamps are in the right place, although the one that's a bit skewed is not very confidence inspiring, but it might just be the picture. Looks like a PSS "Dripless" shaft seal. It should NOT be leaking and you need to figure out why it's leaking.

The seal works by the bellows and the carbon "bearing" at the end of it pressing against a collar on the shaft. It can leak between the bearing and the collar if the compression is not adequate, or if there is contamination or scoring on the face of the bearing or collar.

It *might* be leaking from the bellows itself. PSS recommends changing the bellows every 6 years I think. If the boat is new to you one of the first things I would do is change that bellows. If it fails you're looking at a sinking boat unless you have some might good bilge pumps.

It should not leak at rest, and at most throw of a very very fine spray, almost nothing, when underway. Some people (myself included) put a shaft zinc up against the shaft collar as extra insurances against the collar slipping on the shaft.

Don't touch it until you read the manual on it. You can't just loosen the allen screws and go pushing on the collar to make it tighter. You need to replace the allen screws and their locking screws.

[Capt.Ty]

It only leaks when under way I screwed the collar tight and its not leaking any more but I will replace as soon as I have funds thank you (:

[KeelMe]

You call yourself a captain but you don't know what that mysterious thing is??

Interesting.

[captstu]

People who ask for help on this forum deserve polite help or silence.

[deblen]

Originally Posted by captstu

People who ask for help on this forum deserve polite help or silence.

You are right! We all had to start somewhere. / Len

[AfterHoursNLCT]

It probably doesn't need to be replaced, just adjusted...

[Mithril Bham]

Although I value politeness the urgency of understanding the importance of a stuffing box should be stressed.
Read this completely:
https://marinehowto.com/re-packing-a...-stuffing-box/

[Sailshabby]

KeelMe: I’m a captain and although we’ve never met, I know what you are. Get with the program, bucko.

[Chuck Hawley]

Originally Posted by captstu

People who ask for help on this forum deserve polite help or silence.

I completely agree. Why be snarky? There are some unnecessarily rude responses on CF on a regular basis.

[KimSails]

Upfront caveat:
I don't have a shaft seal, I have an old-fashioned stuffing box, which performs the same function, but in a different way.

I seriously considered getting a shaft seal a couple years ago when I replaced my prop shaft and coupling. My knowledge of the shaft seal is limited to the research I did a couple years ago.

There are some nice benefits to having a shaft seal, but there some very important maintenance items that need to be performed. Not performing these items could sink your boat. Research this device thoroughly and understand how to maintain it!

Items that I remember:
-- "burp" the shaft seal each time the boat is launched after being out of the water
-- Replace the rubber bellows every several years. don't wait for it to become old/cracked
-- Tension the bellows properly. Each time you adjust the the tension use NEW set screws. Make sure the pointy end of the set screws are against your prop shaft. Back up each set screw with a second set screw.

Maine Sail has a nice article on the PSS Shaft Seal (along with many other helpful articles):
https://marinehowto.com/installing-a-pss-shaft-seal/

[jmschmidt]

This so-called "dripless" shaft seal may be advertised as dripless but it sure isn't "sink-less." One almost sunk my slip-neighbor's boat but I noticed he was going down by the bow and called the club office. These things need constant monitoring and inspections. Give me the old-fashioned stuffing box.

[captstu]

I’ve had conventional and drip less seals. Neither seems better than the other, both having given me grief at times. Anything in water needs attention. I like the dryer bilge and less frequent pump cycling.