SKU: 75353203778

PSS Shaft Seal 1" Shaft 2 1/4" Tube

Sale price$145.80 Regular price$162.00
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Description

PSS Shaft Seal 1" Shaft 2 1/4" TubePSS Shaft Seal 1" Shaft 2 1 4" Tube Shaft Diameter: 1" Stern Tube Diameter (D): 2 1 4" Total Length (A): 6. 975" Total Length (compressed) (Compressed A): 6. 225" Rotor Diameter (B): 2. 375" Carbon Cuff Diameter (C): 2" Stern Cuff Length (E): 1. 5" 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

PSS Shaft Seal 1" Shaft 2-1/4" Tube

Shaft Diameter: 1"
Stern Tube Diameter (D): 2-1/4"
Total Length (A): 6.975"
Total Length (compressed) (Compressed A): 6.225"
Rotor Diameter (B): 2.375"
Carbon Cuff Diameter (C): 2"
Stern Cuff Length (E): 1.5"

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.


Brochure (pdf)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 75353203778

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rebecca
Waukegan, US
★★★★★ 5
Glass screen cut shield
Model: iPad A16 11th 2025 /10th 2022
This is a great product. I’ve used on every phone I’ve owned and now I’m using it on my tablets. Wouldn’t use anything else. Love it. Price is great and the product works great
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Reviewed in the United States on June 6, 2026
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T'Quanda
Carnegie, US
★★★★★ 4
Clear protection with easy installation
Model: iPad 9th/8th/7th Gen 10.2 Inch, Model: iPad 9th/8th/7th Gen 10.2 Inch
The ProCase screen protectors fit my iPad 7th generation well and provide clear protection without affecting touch sensitivity or screen clarity. The installation process was very simple, Unfortunately I did have some trouble with bubbles forming in the corner after applying the first one, which was a bit difficult to fully smooth out. The second protector went on slightly better, but it still required extra effort to get a perfect finish. Despite that issue, the screen protector still does its job well in protecting against scratches and daily wear. It also comes in a 2 pack, which adds good value in case one is applied incorrectly. It’s a solid product for protection, but the installation can be a little tricky if you want a completely flawless, bubble free look
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Reviewed in the United States on May 22, 2026
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LaQuetta Watson
Lowell, US
★★★★★ 5
Get it now
Model: iPad A16 11th 2025 /10th 2022
Perfect, really easy to apply as well. Looks great and fits perfectly. I also noticed there not much glare
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Reviewed in the United States on May 29, 2026
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Bonnie Mobilio
New York, US
★★★★★ 5
Great product and reasonably priced!
Model: iPad A16 11th 2025 /10th 2022
Reasonably priced! Well packaged and protected! Very easy to install and I love it!
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Reviewed in the United States on June 7, 2026
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Liusmary feria guerra
Bozeman, US
★★★★★ 5
Excellent Screen Protector – Easy to Install and Crystal Clear
Model: iPad A16 11th 2025 /10th 2022
am very pleased with this tempered glass screen protector for my iPad. Installation was quick and easy, with no bubbles, and the fit is perfect. The screen remains crystal clear, and the touch sensitivity is exactly the same as before. It provides great protection against scratches and everyday wear while maintaining the original display quality. I also appreciate that the package includes two protectors, which offers excellent value for the price. Highly recommended for anyone looking to keep their iPad screen safe and looking brand new!”
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Reviewed in the United States on June 5, 2026

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