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Description
PSS Shaft Seal 1-½" Shaft 2-¾" TubePSS Shaft Seal 1 1 2" Shaft 2 3 4" Tube Shaft Diameter: 1 1 2" Stern Tube Diameter (D): 2 3 4" to 2 7 8" Total Length (A): 9. 175" Total Length (compressed) (Compressed A): 8. 175" Rotor Diameter (B): 3. 75" Carbon Cuff Diameter (C): 3. 25" Stern Cuff Length (E): 2" The PSS Shaft Seal is the number one selling marine mechanical seal worldwide and is installed as standard equipment by many of the worlds most reputable boat builders yards. The PSS Shaft
PSS Shaft Seal 1-1/2" Shaft 2-3/4" TubeShaft Diameter: 1-1/2"
Stern Tube Diameter (D): 2-3/4" to 2-7/8"
Total Length (A): 9.175"
Total Length (compressed) (Compressed A): 8.175"
Rotor Diameter (B): 3.75"
Carbon Cuff Diameter (C): 3.25"
Stern Cuff Length (E): 2"
The PSS Shaft Seal is the number one selling marine mechanical seal worldwide and is installed as standard equipment by many of the worlds most reputable boat builders / yards. The PSS Shaft Seal is also recognized as the premiere retrofit (aftermarket) seal on the world market. Certified by Bureau Veritas, ABS & Rina: Boat builders / yards recognize the advantages and value of installing the PSS as it eliminates the maintenance, constant adjustment & cost associated with traditional packing type glands. Aside from these benefits, the PSS Shaft Seal helps to eliminate water in the bilge (100% water tight) & wear to the propeller shaft. The PSS Shaft Seal can be easily retrofitted and is available for shafts ranging from 3/4" (20mm) to 6" (150mm).
The PSS Shaft Seal is a mechanical face seal that is created between the flat surfaces of the rotating stainless steel rotor and the stationary carbon flange. The stationary carbon flange is attached to the vessels stern tube with hose clamps and the carbon flange is attached to the front side of the bellows with hose clamps. The stainless steel rotor is fit on the shaft in front of the carbon flange. The stainless steel rotor is used to compress the bellows before the collar is secured to the shaft with set-screws. This compression (pre-load) maintains contact between the faces and allows the PSS to compensate for the thrust from the propeller. The carbon flange is bored larger than the shaft diameter allowing it to "float" around the shaft and thus compensate for most misalignment and vibration problems. The stainless steel collar is sealed to the shaft by two o-rings that are recessed into the bore of the collar. These o-rings rotate with the shaft and stainless steel rotor and do not experience wear during operation.
**As with any rubber hose below waterline, the PSS bellows must be inspected on a regular basis for any sign of wear, aging or chemical deterioration. PYI suggests as preventative maintenance that the PSS bellow be replaced in six year intervals. During bellows replacement it is recommended the o-rings & set screws in the stainless steel rotor also be replaced."
Bellows may need to be more frequently inspected in an environment where non-sealed batteries emit sulfuric acid. Sulfuric acid vapor will accelerate rubber deterioration, as will an ozonater.
The Maintenance Kit includes the items you need to properly maintain your PSS Shaft Seal. Included in the kit is one (1) PSS bellow, two (2) O-rings, five (5) set screws, four (4) new hose clamps and an allen key.
Manufacturer : PSS Shaft Seal
Manufacturer Part No : 02-112-234
UPC : 839662007078
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Product Reviews
★★★★★ 5
A beautiful and affecting book
Format: Hardcover
A beautiful and affecting book. The civil war is, at least to me, deeply familiar, but this book focuses on the personal, and conveys with a painful immediacy the ways that the horror of this conflict infiltrated and transformed the day-to-day existence of our not-so-distant ancestors. I was struck as I have never been before by the degree to which the appalling, unprecedented violence of the conflict was "just around the corner" for familiar and modern-seeming Americans.
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Reviewed in the United States on May 10, 2015
★★★★★ 5
... our traditional textbook and primary sources) and my students LOVE it. Although it's not perfect
Format: Hardcover
I have started using this in my US history survey class (along with our traditional textbook and primary sources) and my students LOVE it. Although it's not perfect, it's a great complement to other sources and offers a terrific way to talk about alternate ways to interpret history. In addition, my 11 and 14 year old sons have also read it and enjoyed it, so it's accessible for a broad range of ages. And, as my students note in their final papers, it's fun to read, and how often do gen ed students say that at the end of the semester?
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Reviewed in the United States on December 16, 2016
★★★★★ 5
Former lib. Book
Format: Hardcover
Book was as described
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Reviewed in the United States on November 18, 2023
★★★★★ 5
Carry on with the great writing Rachel Lacey while I look for my next bodyguard book
Format: Kindle
I'm on a bodyguard reading kick right now, only wlw of course. I read this one for the first time about a year ago and somehow, I didn't leave a review. ( I'm good at hopping from one book to another and forgetting to write one. oopsy) I loved the bodyguard part but as stories go I always hate someone's parent dying. ( too much like real life) I know it's necessary to show why Natalie is so effed up. Rachel wrote a great ending to this story and that is always a plus in my eyes.
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Reviewed in the United States on April 22, 2026
★★★★★ 4
cute and captivating
Format: Kindle
I really enjoyed the storyline and the emotional growth of the characters in this book. I’d been putting it off for a while but I’m glad I finally picked it up and took a chance on it because it was such a cute story.
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Reviewed in the United States on July 24, 2025