Description
Silicone Shaft Seal 2" Shaft & 2-3/4" Tube
The PSS PRO Shaft Seal is a mechanical face seal utilizing PSS's proven stainless steel and carbon sealing components, with a few additions. These additions include adding reinforced silicone bellows, 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 that is suitable for a variety of applications and has unmatched performance.
Features:
- 2 in. shaft diameter
- 2-3/4 in. to 2-7/8 in. stern tube diameter
Certifications:
- ABS Certified
- RINA Certified
- Bureau Veritas Certified
How Does it Work?
Two nitrile o-rings seal the stainless steel rotor to the shaft and will not experience wear.
The Shaft Retention Collar is attached to the shaft and helps retain the propeller or rudder shaft in a vessel in the event of catastrophic failure of the coupling or if the shaft comes free from the coupling.
A seal is created between the two mating faces of the carbon stator and the stainless steel rotor.
A seal is created between the two mating faces of the carbon stator and the stainless steel rotor.
Raw water is fed to the PSS Shaft Seal for cooling / lubricating the seal faces on high speed vessels.
Hose clamp tail protection, Clamp Jackets.
The stationary carbon stator is attached to the bellows, which is secured to the stern tube (shaft log).
316SS hose clamps with rolled edges and a non-perforated band.
Shaft Retention Collar
The PYI Shaft Retention Collar is designed to help retain the propeller or rudder shaft in a vessel in the event of catastrophic failure of the coupling or if the shaft comes free from the coupling. The double split design provides maximum axial holding power with the benefit of quick and efficient assembly with the shaft installed. The design fully engages the shaft without marring. Easily installed where major disassembly would otherwise be required. Greater axial holding power than set screws or one-piece clamping collars. Effective on hard and soft shafts.
Rotor
The PSS stainless steel rotor is slid down the shaft and secured to the shaft with set screws at 90° for maximum holding power. Precision tolerances are maintained by computer-controlled lathes. The faces have a number 9 micro finish and are perpendicular to the bore to prevent run-out as the collar rotates. The carbon graphite stator will polish the face of the rotor during the first few minutes of operation. The stainless steel rotor should not need to be replaced under normal operating conditions. The stainless steel rotor used on the PSS Type A Shaft Seal is made from 316L stainless steel.
Carbon Stator
The high-density resin-impregnated carbon/graphite stator is a composite that is first mixed, molded, and then formed under pressure. The blanks are then baked, machined, and lapped. The face of our carbon is finished to a flatness of 4 helium light bands (measured .000044" of variation over the entire lapped surface). The grade of carbon used in the PSS has an operating temperature of over 500° Fahrenheit (+260° Celsius) and cannot melt if the seal runs dry, unlike a rubber lip seal or plastic face seal. The high density of the carbon greatly increases its longevity and wear resistance. Several commercial vessels have recorded over 40,000 (over 4-1/2 years of continuous operation) engine hours on the same, original components. The carbon should not need to be replaced under normal operating conditions.
Bellow
The PSS PRO Shaft Seal bellow provides the best combination of durability, strength, and elasticity. It's constructed of four-ply aramid or silicone with a flurosilicone outer. This flurosilicone cover creates an oil- and fuel-resistant barrier, protecting the exterior surface from the possibility of damage from a splash or spill. Both ends of the bellow are sealed. The four-ply cloth inlay provides excellent strength and resistance to abrasion. This bellow has a continuous operating temperature range of -90°F to +425°F (-70°C to +220°C).
Quick Guide (pdf)
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Refund Policy
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return or exchange.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, including tags, instruction manuals, warranty cards, and in its original packaging. You’ll also need the receipt or proof of purchase. We reserve the right to refuse returns or assess additional fees at our discretion if the merchandise is missing parts or is not in new condition
If your return request is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
To start a return, please contact us at info@theyachtrigger.com
Damages and Warranties
Please inspect your order upon receipt and contact us immediately if the item is defective, or damaged, or if you receive the wrong item so that we can evaluate the issue and make it right. Most items we sell are covered by manufacturers' warranties. If you experience difficulty with a product, please contact the appropriate manufacturer for assistance and troubleshooting help, or email us at info@theyachtrigger.com
Exceptions / Non-returnable Items
Certain types of items cannot be returned, e.g. custom products such as special orders. We also do not accept returns for hazardous materials, flammable liquids, or gasses. Please get in touch if you have questions or concerns about your specific item. Unfortunately, we cannot accept returns on sale items or gift cards.
Exchanges
The fastest way to ensure you get what you want is to request a return of the item you have, and once the return is accepted, make a separate purchase for the new item. This will ensure that your correct item is in stock.
European Union 14-day Cooling off period
Notwithstanding the above, if the merchandise is being shipped into the European Union, you have the right to cancel or return your order within 14 days, for any reason and without a justification. As above, your item must be in the same condition that you received it, unworn or unused, with tags, instruction manuals, warranty cards, and in its original packaging. You’ll also need the receipt or proof of purchase.
Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. When processing a refund, no additional transaction fee is incurred. However, the original credit card transaction fee isn't refunded to you when issuing a refund. If approved, you’ll automatically be refunded on your original payment method within 10 business days. Please remember it can take some time for your bank or credit card company to process and post the refund. If more than 15 business days have passed since we’ve approved your return, please contact us at info@theyachtrigger.com
Return policy abuse
We reserve the right to refuse service to anyone suspected of abusing any policy of The Yacht Rigger.
