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Description
PSS Shaft Seal 1-¼" Shaft 2-¼" TubePSS Shaft Seal 1 1 4" Shaft 2 1 4" Tube Shaft Diameter: 1 1 4" 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 1-1/4" Shaft 2-1/4" TubeShaft Diameter: 1-1/4"
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: 02-114-214
Brochure Literature (PDF)
Installation Guide (PDF)
GRP:WRO
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4.8 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Fantastic Mental Stimulation for My Dog!
Color: Higher Level-Navy A
I am absolutely loving the Dog Puzzle Toy! It’s such a great way to keep my dog mentally engaged and entertained. The concept is simple—just put treats into the puzzle slots—and it provides hours of fun as my dog works to figure out how to get to the treats. It’s amazing to see how much focus and problem-solving skills he’s using!
The toy is sturdy, and the slots are easy to fill. I love that it’s adjustable, so I can make it a bit more challenging as my dog gets better at it. It’s also made from durable, pet-safe material, which gives me peace of mind knowing it’s not only fun but also safe.
My dog seems to really enjoy it, and I can tell that it’s helping with his mental stimulation. It’s a great alternative to traditional chew toys, and I’ve noticed a positive difference in his behavior and energy level.
Pros:
Great mental stimulation for dogs
Easy to use—just add treats
Adjustable difficulty level
Durable and pet-safe material
Keeps dogs entertained for longer periods
Cons:
None so far!
This toy is perfect for keeping my dog entertained while giving his brain a workout. I highly recommend it for anyone looking to challenge their pet in a fun and rewarding way!
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Reviewed in the United States on February 11, 2025
★★★★★ 3
Interactive. Triggers more of dogs minds
Color: Higher Level-Navy A
My dog had a bit of a time figuring out how it works but she loves it now. Put lil pieces of bacon in the holes and she finds it all well.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Please read!
Color: Higher Level-Navy A
The design is adorable and I love the little bones and paw prints they put on the tabs. They are easy to slide and the colors are bright and admirable. There is different difficulty levels. The yellow circles are more on the easy side. The red ones are a bit more harder if you have a more intelligent dog. The three white tabs in the middle move in a 360 circle, there is one missing so you can slide the red tab in to hide the treats. I use my dog's kibble as treats; the kibble pellets are 1cm in length and 1cm in width. I can fit about 2 pellets in each tab hole, there are 14 small holes which you can hide the treats in total.
Cleaning the puzzle
It depends if you wash it by hand or put it in the dishwasher. I do both but I prefer the dishwasher because it is a little hard to clean by hand since there is so many nooks and crannies on the toy. Of course, it is dishwasher safe and I recommend putting it in by itself because you don't want to cross-contaminate the dog slobber to be on your dishes. I wouldn't put crushed or wet dog food in it because it could get in the sliding rails and jam it up or get moldy. If you are going to dry the toy, open all the tabs so they are exposed. If you cannot, that's okay.
My dog's opinion
I have two dogs, a 2-year-old chocolate Labrador named Maggie and a 7-year-old labradoodle named Rufio, Maggie takes about 1 or 2 minutes to finish the puzzle because she is super energetic. Rufio takes 3 or 4 minutes because he is calmer; but sometimes I have to help him just a little bit. It is suitable for all dog ages and I recommend it if your dog (s) are annoying you. They both love it and I give it to them for mental stimulation and as a reward. The bottom has "non-slip pads", but if I'm being honest they actually don't work that well. My dogs just slide it around.
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Reviewed in the United States on July 13, 2025
★★★★★ 5
Great design!
Color: Higher Level-Navy A
This Joansan Dog Puzzle Toy is exactly what I was looking for. My little MinPin is a worker and he likes having a job to do. I purchased this to entertain him when rolling his treat ball all over the place isn't practical. This disc has a non slip bottom and it's actually fairly heavy. It doesn't slide easily. So my little worker usually ends up picking it up and transporting it to different locations throughout the house. Obviously, individual results will vary, depending on size, personality, and breed of the dog using it, but it's been great for my lil guy. He gets a little physical and mental exercise. It's sturdy enough to withstand his scratching and chewing. My big dog likes it too. The size is perfect for food oriented cats too. My cat is too lazy to work for his food though. So he wasn't interested in it.
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Reviewed in the United States on November 6, 2025
★★★★★ 4
This feeder will surely make your dogs work for their food.
Color: Higher Level-Navy A
I recently tried this slow feeder (I purchased 2 feeders) for my two Corgis (25 & 30 lbs.). Overall, it’s a well-constructed product and definitely slows down eating as intended. The design encourages dogs to work for their food, which helps with digestion and keeps them engaged.
That said, there are a couple of challenges I noticed. The kibble sometimes gets jammed in the sliding doors, which can make it harder for my pups to access the food. Also, the feeder doesn’t hold a large amount of kibble—I found myself needing to refill it 2–3 times per meal to accommodate both of my dogs. Finally, my pups had a tougher time reaching the kibble in the middle ring, which caused a bit of frustration.
Despite these issues, it’s sturdy, safe, and does the job of slowing down fast eaters. I think it could work especially well for smaller dogs or those who eat less at mealtime.
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Reviewed in the United States on September 27, 2025