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 Jul 18 - Jul 23

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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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Laci
Natrona Heights, US
★★★★★ 1
Trash
Model: 17785
Ordered 2/22/26, installed2/23/26, had a gritty sound immediately, and should've asked for a replacement then but was just happy to be mobile again, 3/29/26 left me sitting on the side of the road popping starter fuses over and over... not a decent part especially since im now realizing there is zero warranty... do yourself a favor, read the reviews before you buy and dont put money in this sellers pocket
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Reviewed in the United States on March 29, 2026
S
Verified Purchase
Selwyn Fisher
Natrona Heights, US
★★★★★ 5
Good quality and great service
Model: 17785
Quality part, met expectations.
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Reviewed in the United States on April 5, 2026
S
Verified Purchase
Steven harris
Massapequa, US
★★★★★ 5
Great starter
Model: 17785
Great fit but I did have trouble getting the switch plug in to click into place but after that worked perfectly
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Reviewed in the United States on March 3, 2026
B
Verified Purchase
Buenas noches como esta por favor necesitamos más productos de estos Inyector de combustible DM5G-9F593-AA para Focus F iesta B-Max C-Max Ford 1.0 Ecoboost, garantía de 3 meses
Phoenix, US
★★★★★ 4
La calidad
Model: 17825
Muy bien
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Reviewed in the United States on October 1, 2025
S
Verified Purchase
Saima Rivero
Phoenix, US
★★★★★ 5
🤗
Model: 17942
Excelente producto. Funciona perfectamente, se nota de buena calidad y la instalación fue sencilla. Llegó rápido y bien empacado. Muy satisfecho con la compra, lo recomiendo.
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Reviewed in the United States on March 19, 2026

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