SKU: 85605265425

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

Sale price$280.80 Regular price$312.00
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Ships within 48 hours · Estimated delivery Jul 13 - Jul 18

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Description

PSS PRO Shaft Seal 1-3/4" Shaft & 3-1/2" TubePRO Shaft Seal 1 3 4" Shaft & 3 1 2" Tube The PSS PRO Shaft Seal is a mechanical face seal utilizing our proven stainless steel and carbon sealing components but adds reinforced silicone bellows, a secondary shaft retention collar, 316 Stainless Steel hose clamps (rolled edges and non perforated), and an optional Nitronic 50 rotor upgrade (for highly corrosive environments). Designed specifically for applications that will require increased durability

PRO Shaft Seal 1-3/4" Shaft & 3-1/2" Tube

The PSS PRO Shaft Seal is a mechanical face seal utilizing our proven stainless steel and carbon sealing components but adds reinforced silicone bellows, a secondary shaft retention collar, 316 Stainless Steel hose clamps (rolled edges and non-perforated), and an optional Nitronic 50 rotor upgrade (for highly corrosive environments). Designed specifically for applications that will require increased durability and resistance to harsh, corrosive, high pressure, and otherwise demanding environments. The PSS PRO Shaft Seal is a specialized mechanical seal suitable for various applications, with unmatched performance.

As with PSS Type A & B Seals, The PRO Shaft Seal is a mechanical face seal. The sealing surface is created between the flat surfaces of the rotating stainless-steel rotor and the stationary carbon flange. The stationary carbon flange is attached to a heavy-duty silicone bellows attached to the vessel’s stern tube (shaft log), with 316SS hose clamps. The stainless-steel rotor is fitted on the shaft in front of the carbon flange and is used to compress the bellows, the rotor is then secured to the shaft with set screws, and the shaft retention collar is installed. This compression (pre-load) maintains constant contact between the two mating faces of the stainless-steel rotor and carbon flange, allowing the PSS to compensate for the variable axial movement due to propeller thrust. In addition, the carbon flange is over-bored to the shaft diameter allowing it to "float" around the shaft and thus compensate for most misalignment and vibration from the drive-line. The stainless-steel rotor is sealed to the shaft by two O-rings recessed into the rotor's bore. These O-rings rotate with the shaft and the stainless-steel rotor and therefore do not experience wear during operation.

Specifications:

  • Temperature Limits: -13°F to 425°F (-25°C to 220°C)
  • Pressure Limits: 40 PSI (2.75 BAR)
  • Shaft RPM Limits: 10,000 RPM
  • Carbon Graphite: Lapped to 4 HLB (0.000044" tolerance)
  • 316SS / Nitronic 50: Faced to 9 Ra
  • Bellow Material: Molded formed silicone / fabric

Product Dimensions:

  • Shaft Dia. (A) 1-3/4"
  • Stern Tube Dia. (B) 3-1/2" to 3-5/8"
  • Uncompressed Length (C) 9.268" 
  • Approx. Compressed Length 8.268" 
  • Rotor Diameter (D) 3.75"
  • Stern Cuff Length (E) 1.3"

Manufacturer : PSS Shaft Seal
Manufacturer Part No : 03-134-312
UPC : 015568069932
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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: 85605265425

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Brandee
Houston, US
★★★★★ 3
Ok product for average shape
Size: Large, Color: White
ok for the price but didn't work out for us. I had one guy whose body is thick and one who is thin. Couldn't get the set to fit on top and bottom at the same time, pants were a lil see through, but still decent quality and price.
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Reviewed in the United States on July 26, 2025
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Amazon Customer
Massapequa, US
★★★★★ 5
Would order again!
Size: Small, Color: Royal Blue, Size: Small, Color: Royal Blue
This set was very affordable, lightweight and my son said it was comfortable. It came back fast and it was perfect for Easter Sunday! My son is 6’1 and he weighs 140 lbs.
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Reviewed in the United States on April 7, 2026
B
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Bridgette
Port Orchard, US
★★★★★ 5
Mens Suit
Size: Large, Color: Light Champagne, Size: Large, Color: Light Champagne
Wedding/Groomsmen: large Fit my husband perfect. The pants have a a spot with elastic so you can make them smaller if need be. Great color, lightweight and just as good of quality as Men's Wherehouse would rent.
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Reviewed in the United States on December 2, 2025
J
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John D. Steiger
Lowell, US
★★★★★ 5
Great value
Size: Medium, Color: Light Champagne
I bought this for my teenage son for homecoming, it really was a great value suit for the price. It even held up after a full night of dancing. He’s about 6 foot and 200 pounds So it’s very true to size
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Reviewed in the United States on November 20, 2025
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KIM JONES
Los Angeles, US
★★★★★ 5
Suit or separates
Size: Medium, Color: Black
Very nice. Fits well but looks like the pieces were from 2 different dye lots.
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Reviewed in the United States on October 18, 2025

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