By PSS
PSS Seal 25 mm Shaft, 2 1/4" Stern Tube
Regular price
€439,01
Regular price
Sale price
€439,01
Unit price
per
Tax included.
No more dripping stuffing boxes: The PSS Shaft Seal Type A is a low-maintenance mechanical face seal that seals your propeller shaft absolutely watertight. It reliably compensates for misalignments, vibrations, and the axial back and forth movement caused by propeller thrust – with no dripping water in the bilge.
Tip: Correct bellows preload is crucial for proper function. After installation, check the compression of the bellows and ensure that the rotor set screws are resting on clean, degreased shaft metal. After the first few hours of operation, recheck all hose clamps for a tight fit.
Couldn't load pickup availability
Regular price
€439,01
Regular price
Sale price
€439,01
- Mechanical face seal – no dripping, no readjustment as with classic stuffing boxes
- Floating carbon flange automatically compensates for misalignments and shaft vibrations
- Pre-tensioned stainless steel rotor keeps sealing surface permanently in contact even with changing propeller thrust
- O-rings rotate with the shaft – no wear on the shaft surface during operation
- Wide temperature range from –15 °C to +107 °C for year-round use
- Robust materials: carbon-graphite lapped to 4 HLB, rotor made of 316 SS / Nitronic 50
| Type | PSS Shaft Seal Type A |
|---|---|
| Shaft Diameter | 50 mm |
| Stern Tube ID | 3″ |
| Seal Principle | Mechanical Face Seal (Rotating Stainless Steel Rotor / Stationary Carbon Flange) |
| Rotor Material | 316 SS / Nitronic 50, 9 Ra Surface Finish |
| Carbon Flange | Carbon Graphite, Lapped to 4 HLB (Tolerance 0.000 011 mm) |
| Bellows Material | Molded Nitrile – PVC |
| Rotor Seal to Shaft | 2 O-Rings (Rotating, No Wear in Operation) |
| Temperature Limits | –15 °C to +107 °C |
| Pressure Limit | 1 bar (15 PSI) |
| Max. Shaft Speed | 10,000 RPM |
| Carbon Flange Mounting | Hose Clamps on Bellows and Stern Tube |
| Rotor Mounting | Set Screws on Shaft |
PSS
Gewicht (ca.): 0.11 kg
