Description
PSS PRO Shaft Seal 2" Shaft/3" Tube | Boat Supply Store
Engineered for the rigors of marine propulsion, this mechanical face seal ensures zero leakage and exceptional longevity in harsh environments. It features a lapped carbon graphite sealing surface and a robust 316 Stainless Steel or optional Nitronic 50 rotor, capable of operating up to 40 PSI at 10,000 RPM and temperatures from -13°F to 425°F (-25°C to 220°C). Ideal for high-performance offshore vessels or commercial applications requiring ultimate reliability.
Key Features
- Unmatched Durability with reinforced silicone bellows for extended service life.
- Enhanced Security via a secondary shaft retention collar that prevents accidental dislodgement.
- Corrosion Resistance built with premium 316 Stainless Steel components.
- Self-Adjusting design compensates for shaft movement and minor misalignment.
- Zero Leakage achieved through a precision-lapped mechanical face seal.
- Wear-Free O-Ring Seal on the shaft ensures longevity without degradation.
- High-Performance Rated for demanding applications up to 10,000 RPM and 40 PSI.
- Optional Nitronic 50 Rotor for extreme corrosive environments.
Specifications
| Product Specifications | |
|---|---|
| Shaft Diameter | 2" |
| Stern Tube Diameter | 3" to 3-1/8" |
| Seal Type | Mechanical Face Seal |
| Bellows Material | Reinforced Silicone |
| Rotor Material | 316 SS / Optional Nitronic 50 |
| Sealing Surfaces | Lapped Carbon Graphite / 316 SS or Nitronic 50 |
| Hose Clamps | 316 Stainless Steel with rolled edges, non-perforated |
| Temperature Range | -13°F to 425°F (-25°C to 220°C) |
| Max Pressure | 40 PSI (2.75 BAR) |
| Max Shaft Speed | 10,000 RPM |
Who This Is For
Marine vessel owners and operators demanding superior shaft sealing performance in challenging conditions such as high shaft speeds, corrosive saltwater, or elevated pressures. This seal is engineered for commercial craft, performance-oriented yachts, and extended offshore voyages where absolute reliability is paramount.
How It Compares
| Feature | PSS PRO Shaft Seal 2" Shaft/3" Tube | Competitor |
|---|---|---|
| Seal Type | Mechanical Face Seal | Stuffing Box with Packing / Mechanical Face Seal |
| Bellows Material | Reinforced Silicone | N/A (uses packing) / Proprietary Rubber Compound |
| Shaft Retention | Set Screws & Secondary Collar | Packing Compression Nut / Set Screws |
| Shaft Diameter | 2" | Up to 3" / 2" |
| Stern Tube Diameter | 3" to 3-1/8" | — |
| Max Shaft RPM | 10,000 RPM | Varies (typically lower) / Varies |
| Pressure Limit | 40 PSI | Varies (depends on packing and adjustment) / Varies |
Common Concerns Answered
Is the PSS PRO Shaft Seal a worthwhile investment over a traditional stuffing box?
While the initial cost is higher, the PSS PRO's advanced construction, including reinforced silicone bellows and premium 316 SS components, provides superior durability, zero leakage, and significantly lower maintenance, justifying the investment for demanding applications.
What is involved in ensuring the correct fit for the PSS PRO Shaft Seal?
Precise measurement of both the shaft diameter and the stern tube's internal diameter is critical for selecting the correct PSS PRO Shaft Seal size, as detailed in the product specifications.
Can I install the PSS PRO Shaft Seal myself, or is professional installation required?
Installation requires careful attention to measurement, alignment, and secure component mounting. While achievable for experienced DIYers with the right tools, professional installation is recommended to guarantee optimal performance and longevity.
Frequently Asked Questions
What is the primary advantage of the PSS PRO Shaft Seal over standard PSS seals?
The PSS PRO offers enhanced durability and reliability through its reinforced silicone bellows and a secondary shaft retention collar, providing increased resistance in harsh marine environments and greater security.
What is the maximum shaft RPM for the PSS PRO Shaft Seal?
The PSS PRO Shaft Seal is rated for a maximum shaft speed of 10,000 RPM.
What is the temperature range for the PSS PRO Shaft Seal?
The seal is designed to operate within a temperature range of -13°F to 425°F (-25°C to 220°C).
Can the PSS PRO Shaft Seal compensate for shaft misalignment?
Yes, the PSS PRO is a self-aligning and self-adjusting seal designed to accommodate minor misalignments and shaft movement.
What is the pressure limit for the PSS PRO Shaft Seal?
The PSS PRO Shaft Seal can withstand pressures up to 40 PSI (2.75 BAR).
