Description
PSS PRO Shaft Seal 2" Shaft | Boat Supply Store
For marine vessels operating in demanding conditions or at high shaft speeds, this PSS PRO Shaft Seal provides superior longevity and operational reliability. It is engineered for a 2" shaft and stern tubes from 3-1/2" to 3-5/8", handling temperatures from -13°F to 425°F and pressures up to 40 PSI. The advanced design incorporates a reinforced silicone bellows and an optional Nitronic 50 rotor for exceptional resistance to corrosive environments and stress, ensuring consistent performance in challenging marine applications like offshore fishing vessels or high-performance craft.
Key Features
- Unsurpassed Durability through reinforced silicone bellows for extended operational life.
- Enhanced Security provided by a secondary shaft retention collar, minimizing risk of dislodgement.
- Corrosion Resistance with premium 316 Stainless Steel hose clamps featuring rolled edges.
- Extreme Environment Capability via an optional Nitronic 50 rotor upgrade for highly corrosive waters.
- Precise Sealing utilizing a lapped carbon graphite face and stainless steel rotor for minimal wear.
- Adaptable to Shaft Movement, compensating for axial motion, misalignment, and vibration up to 10,000 RPM.
- O-ring Longevity achieved by sealing within the rotor's bore, preventing wear on critical components.
- High-Performance Design exceeding standard mechanical seals in endurance and stress management.
Specifications
| Product Specifications | |
|---|---|
| Shaft Diameter | 2" |
| Stern Tube Diameter Range | 3-1/2" to 3-5/8" |
| Operating Temperature | -13°F to 425°F (-25°C to 220°C) |
| Pressure Limit | 40 PSI (2.75 BAR) |
| Maximum Shaft RPM | 10,000 RPM |
| Face Material | Lapped Carbon Graphite (4 HLB tolerance) |
| Rotor Material | 316SS / Nitronic 50 (9 Ra finish) |
| Bellows Material | Molded Silicone / Fabric |
| Uncompressed Length | 9.268" |
| Compressed Length | 8.268" |
| Rotor Diameter | 3.75" |
Who This Is For
Marine vessel owners and operators requiring a highly durable and robust shaft seal solution for demanding applications. This seal is ideal for those operating in corrosive marine environments or with high shaft RPM requirements where reliability is paramount.
How It Compares
| Feature | PSS PRO Shaft Seal 2" Shaft | Competitor |
|---|---|---|
| Shaft Diameter | 2" | — |
| Stern Tube Diameter Range | 3-1/2" to 3-5/8" | 3.5" - 4" |
| Bellows Material | Reinforced Silicone / Fabric | Neoprene, EPDM Rubber |
| Secondary Shaft Retention | Yes | No |
| Optional Nitronic 50 Rotor | Yes | No |
| Max Shaft RPM | 10,000 RPM | Typically up to 3000 RPM |
Common Concerns Answered
Why is the PSS PRO Shaft Seal more expensive than standard shaft seals?
The PSS PRO Shaft Seal commands a higher initial cost due to its advanced construction, including reinforced silicone bellows, a secondary shaft retention collar, and premium materials like 316 SS hose clamps, contributing to significantly enhanced durability and longevity, especially in demanding marine environments, thereby reducing long-term maintenance and replacement expenses.
What are the implications of needing precise installation for this shaft seal?
Precise installation is critical for the PSS PRO Shaft Seal to ensure optimal function and achieve its rated longevity; deviations in alignment or measurement can compromise sealing performance. While requiring mechanical aptitude, professional installation is recommended for those unfamiliar with shaft seal systems to guarantee correct setup.
Is the Nitronic 50 rotor upgrade always necessary?
The Nitronic 50 rotor upgrade is specifically designed for highly corrosive environments and extreme stress applications; while not universally necessary, its availability provides a critical performance enhancement for vessels operating in exceptionally harsh marine conditions or those requiring the utmost in corrosion resistance.
Frequently Asked Questions
What is the primary advantage of the PSS PRO Shaft Seal over standard PSS seals?
The primary advantage of the PSS PRO Shaft Seal is its enhanced durability and resistance to harsh conditions, achieved through reinforced silicone bellows and a secondary shaft retention collar, which surpasses standard PSS seals in longevity and performance under stress.
What is the maximum shaft diameter and stern tube diameter this seal is designed for?
This PSS PRO Shaft Seal is designed for a 2" shaft diameter and a stern tube diameter range of 3-1/2" to 3-5/8".
What are the temperature and pressure limits for the PSS PRO Shaft Seal?
The PSS PRO Shaft Seal operates within temperature limits of -13°F to 425°F (-25°C to 220°C) and pressure limits of 40 PSI (2.75 BAR).
Can the PSS PRO Shaft Seal compensate for shaft misalignment and vibration?
Yes, the mechanical face seal design of the PSS PRO Shaft Seal allows it to compensate for axial movement, misalignment, and vibration.
How is the PSS PRO Shaft Seal secured to the shaft?
The PSS PRO Shaft Seal is secured to the shaft via O-rings that are sealed within the rotor's bore, experiencing no direct wear on the shaft itself.
