SKU: 57541569912

PSS Shaft Seal 1-¾" Shaft 3-½" Tube

Sale price$262.88 Regular price$292.09
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Description

PSS Shaft Seal 1-¾" Shaft 3-½" TubePSS Shaft Seal 1 3 4" Shaft 3 1 2" Tube Shaft Diameter: 1 3 4" Stern Tube Diameter (D): 3 1 2" to 3 5 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 1-3/4" Shaft 3-1/2" Tube

Shaft Diameter: 1-3/4"
Stern Tube Diameter (D): 3-1/2" to 3-5/8"
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 Part Numbers: 02-134-312
Brochure Literature (PDF)
Installation Guide (PDF)
GRP:WRO
Shipping Notes
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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]
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SKU: 57541569912

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4.2 ★★★★★
Based on 17 reviews
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RickyD
Charlottesville, US
★★★★★ 5
Package
Size: X-Large, Color: Burgundy
Excellent fit and fast delivery!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026
L
LT
Houston, US
★★★★★ 4
Great suit, but size up
Size: Large, Color: Black, Size: Large, Color: Black
This set comes with a jacket, pants, extra buttons, and a bow tie with an easy clip to remove it. The suit itself is really nice and I love the pattern, however, I thought I purchased a XXL, but seemed to have ordered a L instead. Not quite sure how that happened, but suffice to say, he could not fit the suit. He is normally an L in pants, so based on the fit, we would have needed to size up anyways. He couldn't fit his leg in the pants or his arm in the jacket. I automatically size up on items like this because you can take clothes in, but can't take them out if there is not enough cloth. The suit pants are not lined, but you can see that they did leave room for the legs to be let out. Perhaps if we have the pants let out, he would be able to wear the pants. The jacket is fully lined and it comes with two inside pockets, one can be buttoned. I cannot tell if the jacket has room for alterations, but I might have him fitted for it just to see. It comes with a slit on the back of the jacket, so it has that going for it from a quality standpoint. It does come folded so you have iron or dry clean it before wearing. The quality is good for the most part. There are some threads coming out of the bow tie, but that's all I seen that is less the good. I'm giving it four star based solo on it's look and feel. Of course, I can't comment on the fit. For around $80, I definitely think it's worth checking out for a school semi-formal or fancy dinner out. It might be a little lightweight for a higher end event. Did I say I love the pattern?
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Reviewed in the United States on April 9, 2026
M
Mohamed
Birmingham, US
★★★★★ 5
Stylish look and great value for special occasions
Size: X-Large, Color: Blue, Size: X-Large, Color: Blue
This suit looks really good in person. The pattern adds a nice touch that makes it stand out without looking too flashy. It is a great option for events like weddings, parties, or prom where you want something a bit different from a basic suit. The fit is slim and modern, giving a clean and sharp look when worn. It feels comfortable enough for a few hours, and the overall shape looks more tailored than expected for the price. The jacket sits well, and the pants match nicely to complete the set. The material is lightweight and decent for occasional use. It does not feel like a premium suit, but it looks good and photographs well, which is what matters for events. The bow tie included is a nice extra and helps complete the outfit without needing to buy more pieces. It may need a quick steam or ironing out of the package to look its best. Also, checking the size chart is important to get the right fit. For the price, this is a very good value. You get a full outfit that looks stylish and put together without spending too much. Great option if you need something affordable for special occasions.
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Reviewed in the United States on April 21, 2026
T
themak
Dallas, US
★★★★★ 5
Stylish Statement Suit for the Price
Size: Medium, Color: Gold - Embroidery, Size: Medium, Color: Gold - Embroidery
I really like the black with gold embroidery on this suit - it really will make you stand out. The gold does have a slight green tint to it in certain lighting, but overall I like the unique design and think it looks great. The pants have some flexibility, which made them more comfortable than I expected. I got a Medium - and im usually a 32W. I could see it fitting a 30W or34W too. It arrived in great shape and was not wrinkled at all, though i'm likely going to have to hem the pants 1-2 inches. The pants are neutral and could be worn with other black jackets. I am usually a size 42 bust in jackets, and while the size chart says medium is a 44 bust, i think this fits me like a glove. It also came with a bow tie, which is a nice added bonus. Overall, I think this is a great deal for the price and a solid choice for anyone looking for a versatile standout suit for a formal event or a costume party.
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Reviewed in the United States on April 19, 2026
T
Thomas MacEntee
Waukegan, US
★★★★★ 5
Way better than expected - Not a "costume" at all!
Size: X-Large, Color: Christmas Green
I’m going to be honest: I was fully prepared to open this package and find a cheap, shiny, flammable-looking costume that belonged in a discount Halloween store. Buying a tuxedo on Amazon feels like a total gamble, and I was definitely a skeptic. I couldn’t have been more wrong. This suit is actually fantastic. First off, the fabric. It doesn’t have that "plastic" feel I was dreading; it actually feels elegant and has a nice weight to it. The floral pattern is sharp and the colors are vibrant without being "too much." It looks way more expensive than the price tag suggests. The fit was the biggest surprise. I’m always wary of "slim fit" labels, but this hit the mark perfectly. It’s tailored in the right places without feeling like I’m about to burst a seam if I sit down. I originally bought this thinking it might work for a one-off event, but now I’m genuinely excited to break it out for an upcoming casino night and a wedding later this year. If you’re on the fence because you’re worried about Amazon quality, just go for it. This is a legitimate suit that’ll definitely get you some compliments. 10/10 would buy again.
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Reviewed in the United States on April 7, 2026

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