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Description
PSS Shaft Seal 1-3/ 8" Shaft 2-1/ 4" TubePSS Shaft Seal 1 3 8" Shaft 2 1 4" Tube Shaft Diameter: 1 3 8" Stern Tube Diameter (D): 2 1 4" to 2 3 8" Total Length (A): 7. 38" Total Length (compressed) (Compressed A): 6. 38" Rotor Diameter (B): 2. 875" Carbon Cuff Diameter (C): 2. 5" 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
PSS Shaft Seal 1-3/8" Shaft 2-1/4" TubeShaft Diameter: 1-3/8"
Stern Tube Diameter (D): 2-1/4" to 2-3/8"
Total Length (A): 7.38"
Total Length (compressed) (Compressed A): 6.38"
Rotor Diameter (B): 2.875"
Carbon Cuff Diameter (C): 2.5"
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.
Manufacturer Part Numbers: 02-138-214
Brochure Literature (PDF)
Installation Guide (PDF)
GRP:WRO
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4.5 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 4
Great entertaining toy
Color: Yellow
This is such a great you to help get some energy out of my little pup. She spends long amounts of time chasing and carrying it around. Entertains her for quite a while. The only draw back is the string that she carries it around with wears thin and break.
If there were replacement ones I would buy them.
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Reviewed in the United States on April 7, 2026
★★★★★ 5
Great interactive toy for pets
Color: Red
Very amusing interactive toy for pets! Our toddler got a kick out of this too :) Keeps our dog entertained and engaged. The battery life was decent and easy to recharge. It has 3 different settings for the movement depending what your pet likes. We had it go under furniture in hard to reach spots, but it is pretty good at moving itself out which is a plus. Great toy if your pet likes to chase.
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Reviewed in the United States on May 5, 2026
★★★★★ 5
One of the Best Toy I’ve Gotten My Dog-Now Buying Our 5th Because He’s Obsessed
Color: Blue
My small mixed breed dog is high intelligence, energy and emotion. Since he was a 2lb puppy, he’s gotten bored with regular dog toys. I came across these when searching for a ball that lights up, not knowing it would be one of the best things I could’ve purchased for him. He plays with it so often that I ended up buying 2 more shortly after the first one. I did that so I could have them charging while he plays with one. They stay charged for a few days if they’re not used much, but he plays with them all throughout the day. They automatically take a nap after 5 minutes of no activity and wake up if moved within 30 minutes. After 30 minutes, you have to turn them back on. He plays with it so often that I only have to turn it on once or twice a day. They’re easy to turn on. You just hold the power button for a couple of seconds and then press it to cycle through to the color of the corresponding setting you want. There are three different settings that combine movement and vibration. I love that no matter what setting you choose, the movement is always randomized, which keeps him from getting bored with it. We’ve had them about 5 months and they all still work, which is amazing because he’s so hard on them. He grabs them by the string and swings them around, hits them against the hard floor, and basically bumps everything nearby with them. They’re made of extremely hard plastic and the ball is covered in rubber. So it helps keep it quieter when zooming through the house. It’s impressive how tough these things are. The first one I bought just got a crack in it two days ago after he smacked it repeatedly on concrete, so they’re surprisingly well made. They sound like a Hot Wheels or tiny race car. The only noise they make really besides the zoom sound when they’re rolling is the vibrating or if they bump into something. Which if they run into a wall, they change direction like a Roomba does. I’m now buying two more because the strings are just now beginning to fray after about 5 months and because he now wants to have two going at the same time. I’ve also bought him an animatronic lobster and a quail for the same reason as these. They all keep him busy and engaged. If he’s awake, he’s making up games using all three of the toys. The animatronics are the same thing where you charge them up, the nap and wake up when moved, and are randomized. I also have two of the lobsters and quail to charge while he plays with the other. The only automatic toy he has that makes noise is the animatronic quail which is programmed to make real quail sounds but quiet enough to not be distracting. These balls are the incredible and I give them to friends with dogs who all love them as well. If you’ve got a dog a dog that needs it’s mind engaged, I HIGHLY recommend these balls!!! I also recommend looking into cat toys because they’re much more entertaining and engaging than a squeaky toy.
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Reviewed in the United States on April 19, 2026
★★★★★ 5
Pet Ball Toy is great!
Color: Red
Absolutely one of the best and most fun toys that our pup has gotten. She is entertained for hours! The interaction helps to keep her active us entertained! It is used by simply pushing the activation button. The material is durable and has survived even when she has chewed it. It is like an energizing bunny! We love it and so does our puppy
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Reviewed in the United States on May 2, 2026
★★★★★ 3
Fun while it lasted
Color: Red
I have a 2-year-old Yorkie who absolutely loves chasing balls, so I was excited to try this toy thinking it would keep him entertained for hours. Unfortunately, it didn’t hold up well. As soon as he caught it, he quickly bit the plastic piece off within just a few minutes.
I understand that dogs can be tough on toys, especially with their natural hunting instincts, but I expected this to be a bit more durable. It just doesn’t seem sturdy enough for even a small dog who likes to chew and chase.
In my opinion, this toy may be better suited for cats or very gentle play rather than active dogs.
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Reviewed in the United States on March 28, 2026
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