By PSS

PSS Seal 20mm Shaft, 1 3/4" Stern Tube

€421,69
€421,69
Tax included.

No more dripping stuffing boxes: The PSS Shaft Seal Type A is a low-maintenance mechanical face seal that provides a completely watertight seal for your propeller shaft. 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 bellows' compression and ensure that the rotor's set screws are seated on clean, degreased shaft metal. After the first few hours of operation, recheck all hose clamps for a secure fit.
brand: PSS
Availability: Low stock
SKU: OB-BB-02-20M-134
Product group:
category:
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€421,69
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  • Mechanical face seal – no dripping, no readjustment as with traditional stuffing boxes
  • Floating carbon flange automatically compensates for misalignment 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″
Sealing 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 (0.000 011 mm tolerance)
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 to Bellows and Stern Tube
Rotor Mounting Set Screws to Shaft

PSS

Gewicht (ca.): 0.11 kg