SKU: 21605959688

PSS Shaft Seal 3" Shaft 4-1/2" Tube

$461.16 $512.40
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Description

PSS Shaft Seal 3" Shaft 4-1/2" TubePSS Shaft Seal 3" Shaft 4 1 2" Tube Shaft Diameter: 3" Stern Tube Diameter (D): 4 1 2" to 4 5 8" Total Length (A): 10. 425" Total Length (compressed) (Compressed A): 9. 175" Rotor Diameter (B): 5" Carbon Cuff Diameter (C): 4. 25" Stern Cuff Length (E): 2. 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

PSS Shaft Seal 3" Shaft 4-1/2" Tube

Shaft Diameter: 3"
Stern Tube Diameter (D): 4-1/2" to 4-5/8"
Total Length (A): 10.425"
Total Length (compressed) (Compressed A): 9.175"
Rotor Diameter (B): 5"
Carbon Cuff Diameter (C): 4.25"
Stern Cuff Length (E): 2.5"

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.
  • Except Preorder products are shipped in 48 hours.
  • Delivery 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: 21605959688

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4.3 ★★★★★
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Lasanda s.
Omaha, US
★★★★★ 4
Works as expected! Good value
Size: 36 Count (Pack of 1)
I bought these because I ran out of Curology patches that I got with the free trial. These work similarly; you’ll need one or two patches to fully get rid of the pimple— it depends on how large & inflamed it is. Even if you need two the first patch will still a do a good job of draining most the gross fluid out. I like that these are more translucent/transparent than some other brands I’ve seen. They’re not obnoxious looking if you’re wearing one or two in the daytime. The adhesion has been great so far. I’ve tried it on bare and moisturized skin and either way it holds up. Once it’s been stuck in place for a few minutes you can apply a moisturizer on your face OVER the patches without them slipping off. Just use a gentle touch. There’s probably cheaper pimple patches from smaller brands but $4.49 (before tax) is definitely a reasonable cost for 30 patches So I gave it 4 stars for value for money. My only qualm is that the small size pimple patches could stand to be at least slightly bigger. Only new closed comedones that are just forming are that small (typically). Otherwise I’m satisfied with this purchase.
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Reviewed in the United States on May 30, 2026
A
Verified Purchase
Amazon Customer
Phoenix, US
★★★★★ 5
Repurchasing for sure
Color: Zero Pore Pads, Size: 70 Count (Pack of 1)
These toner pads have genuinely made my skin look smoother, brighter, and more refreshed. They’re super easy to use and feel really gentle while still giving noticeable results. My skin feels cleaner and softer after using them, and I’ve especially noticed improvement in texture and overall glow. I also love that the pads are really saturated without dripping everywhere, and they don’t irritate my skin. They’ve become such an easy part of my routine, especially on days when I want my skin to look extra fresh and glowy. Definitely one of the better skincare purchases I’ve made lately.
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Reviewed in the United States on May 18, 2026
F
Verified Purchase
Fanofsam1
Lexington, US
★★★★★ 5
medicube Dual-Textured Facial Pads for Exfoliation and Pore Care
Color: Zero Pore Pads, Size: 70 Count (Pack of 1)
If you’ve spent any time on skincare social media, you’ve likely seen these white tubs with bright blue lids. The Medicube Zero Pore Pad 2.0 is a cult-favorite K-Beauty staple designed for those who struggle with "strawberry nose," excess sebum, and texture. It isn't just a toner; it’s a mechanical and chemical exfoliant hybrid. The Dual-Action Design The "2.0" version features a pre-soaked, double-sided pad that serves two distinct purposes: 1. Embossed Side: Provides gentle physical exfoliation to lift away dead skin cells and debris. 2. Silky Side: Polishes the skin and hydrates, prepping the face for the rest of your routine. The Pros: Why It’s a Bestseller • Noticeable Texture Improvement: Within a week of consistent use, most users notice a significant reduction in "bumps" and a smoother surface for makeup application. • Effective Sebum Control: It contains a "Pore Tightening Complex" (including lemongrass and mint peel) that helps keep midday oiliness at bay without stripping the skin bone-dry. • Clean and Convenient: The tub comes with a secondary lid and tweezers, keeping the pads saturated and hygienic. • The "Glow" Factor: Because it uses AHAs and BHAs (Salicylic Acid and Betaine Salicylate), it clears out the "gunk" inside pores, making them appear smaller and the skin look brighter. The Cons: What to Watch For • Fragrance: These pads have a distinct, slightly medicinal/citrus scent. While refreshing to some, it may be irritating if you have a high sensitivity to added fragrance. • Tingling Sensation: If your skin barrier is compromised or you are very sensitive, you might feel a slight sting. It’s a potent exfoliant, not a soothing toner. • Price Point: Compared to basic drugstore toners, Medicube sits at a premium. You are paying for the convenience of the pre-soaked formulation and the specific patented ingredients.
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Reviewed in the United States on May 12, 2026
C
Verified Purchase
Claudia M.
Alexandria, US
★★★★★ 5
Great product, great price!
Color: Zero Pore Pads, Size: 70 Count (Pack of 1)
These toner pads have been amazing for my skin! They leave my face feeling incredibly smooth, refreshed, and clean, and I’ve definitely noticed an improvement in texture and overall glow. I especially love using them while removing my makeup because they make my skin feel extra fresh and clean afterward. I do notice they leave a slight semi-dry/tight feeling on my skin at first, but once I rinse and apply moisturizer, my skin feels absolutely amazing — soft, balanced, and hydrated. The pads are well soaked, easy to use, and make my skincare routine feel so much more effective. I’ll definitely continue using them! I also feel they work just as great and are not as over priced as so many others out there.
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Reviewed in the United States on May 19, 2026
V
Verified Purchase
Veritas
Waukegan, US
★★★★★ 5
They really do work!
Color: Zero Pore Pads, Size: 70 Count (Pack of 1)
I rarely give reviews that aren’t motivated by disappointment, but this is one of them. Medicube makes several products that I use alongside $170 serums and creams, and the Zero Pore Pad is one of them. I love the dual texture, and even after using a pre-cleanser and a “microfolient” face wash (both expensive washes from by Dermologica), the Zero Pore Pad is my ONLY choice for a toner. Compared to the products that go on after using the pads, the pads are incredibly affordable for the results I’ve seen. On the rougher side of the pad, this toner still somehow finds pockets of sebum that are visible on the pad after using as directed. It’s like magic. I’m on my third container of Zero Pore Pads and I can say, without a doubt, they have had noticeable results on my skin, mostly on my nose and the cheek area around my nose. The size of my pores are now smaller, almost invisible. This is despite the fact that I layer a bunch of serums, creams and a moisturizer at night that I lock in with the peel-off Medicube collagen mask. Despite the weight of it all on my pores, the pads still have worked, and they aren’t harsh like some toners-but if you have very sensitive skin or are on acne medication, go with their milder sister product). I wash my face three times a day due to the ick of polluted air and layers of moisturizer and sunscreen, so I’ve been using these three times a day, but occasionally I use the Koji and Tumeric Pads, which have had no noticeable effect aside from serving as a basic toner. The application is lovely on all Medicube’s pads with their dual texture, but like the collagen mask these Zero Pore Pads really do work (for me). Because skin varies with age and melanin content, I am a pale white woman (female at birth) of Scandinavian descent so I don’t know if these would have had the same impact on me at age 17, but now they work, really well. I literally have the glass skin K-beauty prizes—I just used the pads and thought I had something on my face because my skin was shining. I love these, try them!
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Reviewed in the United States on March 29, 2026

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