Description
PSS Shaft Seal 2" Shaft | Boat Supply Store
Eliminate routine bilge maintenance and shaft scoring with the PSS Shaft Seal, engineered for 2-inch diameter propeller shafts and stern tubes ranging from 3-1/4" to 3-3/8". This robust mechanical face seal operates with a stationary carbon flange against a rotating stainless steel rotor, ensuring a 100% watertight seal and compensating for shaft misalignment up to 4 degrees. Its design significantly reduces propeller shaft wear, offering a superior alternative to traditional packing glands for offshore cruisers and bay boats operating in the Gulf of Mexico.
Key Features
- Eliminates maintenance and constant adjustment of traditional packing glands.
- 100% water tight, preventing water in the bilge.
- Reduces wear on the propeller shaft.
- Compensates for most misalignment and vibration problems.
- Mechanical face seal design for reliable operation.
- Certified by Bureau Veritas, ABS & Rina.
- Durable construction for longevity.
- Available for a wide range of shaft diameters.
Specifications
| Product Specifications | |
|---|---|
| Shaft Diameter | 2" |
| Stern Tube Diameter | 3-1/4" to 3-3/8" |
| Total Length (Compressed) | 8.175" |
| Total Length (Extended) | 9.175" |
| Rotor Diameter | 3.75" |
| Carbon Cuff Diameter | 3.25" |
| Stern Cuff Length | 2" |
Who This Is For
Boat owners and builders seeking a reliable, low-maintenance, and water-tight solution for their propeller shaft sealing needs, replacing traditional packing glands or older seal types. This seal is ideal for those prioritizing reduced bilge maintenance and extended shaft life.
How It Compares
| Feature | PSS Shaft Seal 2" Shaft | Tides Marine SureSeal |
|---|---|---|
| Shaft Diameter | 2" | — |
| Stern Tube Diameter | 3-1/4" to 3-3/8" | 3-1/4" |
| Seal Type | Mechanical Face Seal (Rotating Stainless Steel Rotor, Stationary Carbon Flange) | Lip Seal |
| Maintenance | Minimal (periodic inspection, bellows replacement every 6 years recommended) | Requires periodic adjustment and potential replacement of lip seals |
| Water Tightness | 100% Water Tight | Designed to be water tight |
Common Concerns Answered
Is the PSS Shaft Seal more expensive than traditional packing glands?
While the initial purchase price of the PSS Shaft Seal may be higher than traditional packing glands, its zero-maintenance design and extended lifespan offer significant long-term cost savings by eliminating ongoing adjustments, material replacements, and potential damage from leaks or shaft scoring.
Does the PSS Shaft Seal require frequent maintenance?
The PSS Shaft Seal is designed for minimal maintenance. Periodic visual inspection of the bellows is recommended, with replacement of the bellows suggested every six years as a preventative measure, drastically reducing the labor and costs associated with traditional packing gland adjustments.
Is it difficult to get the correct size PSS Shaft Seal?
Accurate measurement of both the shaft diameter and the stern tube diameter is crucial for selecting the correct PSS Shaft Seal model. Detailed installation instructions, including precise measurement guidance, are available to ensure a perfect fit and optimal performance.
Frequently Asked Questions
What is the PSS Shaft Seal?
The PSS Shaft Seal is a high-performance mechanical face seal designed to create a 100% watertight barrier around a vessel's propeller shaft, preventing water ingress into the bilge and reducing shaft wear.
How does the PSS Shaft Seal work?
It utilizes a stationary carbon flange that seals against a rotating stainless steel rotor mounted on the propeller shaft, creating a precise mechanical seal that requires no external lubrication and automatically compensates for minor shaft movement.
What are the benefits of using a PSS Shaft Seal over traditional packing glands?
Benefits include elimination of routine adjustments, 100% watertightness, reduced shaft wear, compensation for shaft misalignment, and global certifications, leading to less bilge maintenance and increased reliability.
What is the recommended maintenance interval for a PSS Shaft Seal?
Periodic visual inspection of the bellows is recommended. Replacement of the bellows is typically recommended every six years as a preventative measure to ensure continued reliable operation.
Can the PSS Shaft Seal be retrofitted to an existing boat?
Yes, the PSS Shaft Seal is designed to be retrofitted to existing boats, often replacing older packing glands or other seal types, provided accurate measurements of the shaft and stern tube are obtained for proper sizing.