SKU: 86602526799

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

Sale price$396.72 Regular price$440.80
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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18

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Description

PSS PRO Shaft Seal 2-1/4" Shaft & 3-1/2" TubePRO Shaft Seal 2 1 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 2-1/4" 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) 2 1/4"
  • Stern Tube Dia. (B) 3-1/2" to 3-5/8"
  • Uncompressed Length (C) 9.675" 
  • Approx. Compressed Length 8.675" 
  • Rotor Diameter (D) 4.2"
  • Stern Cuff Length (E) 1.3"

Manufacturer : PSS Shaft Seal
Manufacturer Part No : 03-214-312
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: 86602526799

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Kimberly Sheppard
Charlottesville, US
★★★★★ 5
Love, and they smell good
Size: 5 Toddler, Color: Black
My daughter is obsessed with these shoes. We have 4 pairs
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 17, 2025
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Doc
Dallas, US
★★★★★ 5
Great price great shoe
Size: 12, Color: Burgundy Polished Full Grain
Excellent shoe. Tried the Sebago penny loafer and the sizing was ridiculous. These J and M are sized perfectly. I’ve had them before and they wear like iron. Very comfortable right out of the box.
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Reviewed in the United States on May 23, 2026
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Verified Purchase
roger mendes
Charlottesville, US
★★★★★ 5
One of the best shoes
Size: 9.5, Color: Black Polished Full Grain
Outstanding. Fashionable, most comfortable and good construction. No sines of use after quite some time. Highly recommended.
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Reviewed in the United States on March 21, 2026
F
Verified Purchase
Fabric Crazy
Belleville, US
★★★★★ 5
Really nice shoes
Size: 9, Color: Black Polished Full Grain
My husband enjoys wearing these shoes. Very classy looking. They fit well. They arrived quickly. He liked them so much he ordered another pair in a different color which have worked out just as well.
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Reviewed in the United States on February 3, 2026
T
Verified Purchase
the agitator
Pawtucket, US
★★★★★ 4
Penny Loafer
Size: 11 Wide, Color: Burgundy Polished Full Grain
I am ending them bak and will order the sae shoe at size 10 1/2. Most shos I fit are 11 however these were too large. They are a beautiful shoe! I will ofder a 10 1/2
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Reviewed in the United States on January 13, 2025

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