Description
PSS 2" Shaft Seal for 2-3/4" Tube | Boat Supply Store
Engineered for the demanding marine environment, this PSS PRO Shaft Seal provides a robust solution for dripless shaft sealing. It is specifically designed for 2-inch diameter propeller shafts and stern tubes ranging from 2-3/4 inches to 2-7/8 inches, ensuring a secure and watertight fit. The construction features reinforced silicone bellows and 316 stainless steel hose clamps, offering exceptional resilience in corrosive saltwater conditions prevalent in areas like the Gulf Intracoastal Waterway.
Key Features
- Reliable 2-inch shaft diameter compatibility
- Secure fit for 2-3/4 inch to 2-7/8 inch stern tube diameters
- Durable reinforced silicone bellows for extended service life
- Corrosion-resistant 316 stainless steel hose clamps with rolled edges
- Superior sealing with proven stainless steel and carbon components
- Enhanced security via integrated Shaft Retention Collar
- Globally recognized ABS, RINA, and Bureau Veritas certifications
- Optional upgrade for extreme environments with Nitronic 50 rotor
Specifications
| Product Specifications | |
|---|---|
| Shaft Diameter | 2 inch |
| Stern Tube Diameter Range | 2-3/4" to 2-7/8" |
| Bellows Material | Reinforced Silicone |
| Hose Clamp Material | 316 Stainless Steel |
| Sealing Components | Carbon Stator / Stainless Steel Rotor |
| Certifications | ABS, RINA, Bureau Veritas |
Who This Is For
Marine vessel owners and operators requiring a high-performance mechanical shaft seal for demanding applications, including high-speed vessels or those operating in corrosive environments where shaft retention is critical.
How It Compares
| Feature | PSS 2" Shaft Seal for 2-3/4" Tube | Competitor |
|---|---|---|
| Shaft Diameter | 2" | — |
| Stern Tube Diameter Range | 2-3/4" to 2-7/8" | 2.75" - 3.25", 2.75" - 3.00" |
| Bellows Material | Reinforced Silicone with Flurosilicone Outer | EPDM Rubber, Neoprene Rubber |
| Hose Clamp Material | 316 Stainless Steel (rolled edges, non-perforated) | Stainless Steel, Stainless Steel |
| Optional Corrosion Resistant Rotor | Nitronic 50 | null, null |
| Certifications | ABS, RINA, Bureau Veritas | null, null |
Common Concerns Answered
Is the PSS PRO Shaft Seal more expensive than other seal types?
While the initial investment for the PSS PRO Shaft Seal may be higher compared to basic rubber lip seals or traditional stuffing boxes, its advanced materials, enhanced durability, and superior sealing performance offer significant long-term value and reliability.
Does the PSS PRO Shaft Seal require special installation procedures?
Precise installation is crucial for optimal sealing and longevity. Careful measurement, proper shaft preparation, and secure clamping are essential. For those unfamiliar with shaft seal systems, professional installation is recommended to ensure it functions as intended.
Users mention positive durability and reliability. How does this translate to real-world boating?
The high customer sentiment reflects the PSS PRO Shaft Seal's proven ability to withstand harsh marine conditions and provide unwavering shaft retention, offering boaters peace of mind during extended voyages, high-speed operations, or when navigating challenging waters.
Frequently Asked Questions
How does the PSS PRO Shaft Seal work?
The PSS PRO Shaft Seal utilizes a spring-loaded carbon stationary face that seals against a stainless steel rotor attached to the propeller shaft. As the shaft rotates, the polished rotor surface creates a watertight seal with the carbon face, preventing water ingress without the need for periodic adjustment.
What is the operating temperature range of the PSS PRO Shaft Seal bellows?
The reinforced silicone bellows are designed to withstand typical operating temperatures encountered in marine applications. Specific temperature ratings are available in the detailed product specifications and installation manual provided by PYI Inc.
What is the purpose of the Shaft Retention Collar?
The Shaft Retention Collar is a critical component that positively locks the PSS PRO Shaft Seal onto the propeller shaft. This feature ensures that the seal remains securely in place, preventing any axial movement and guaranteeing reliable sealing performance even under extreme operating conditions.
What is the expected lifespan of the carbon stator and stainless steel rotor?
With proper installation and regular maintenance, the carbon stator and stainless steel rotor sealing components of the PSS PRO Shaft Seal are engineered for extended service life, often lasting many years without requiring replacement, especially when compared to traditional stuffing box packing.
Is raw water feed required for the PSS PRO Shaft Seal?
No, the PSS PRO Shaft Seal is a self-contained unit and does not require a raw water feed. It operates by maintaining a constant seal against the rotating shaft, making it an ideal dripless solution that eliminates the need for external water supply lines.
