By PSS

PSS seal 50 mm shaft, 3 1/2' stern tube

€995,02
€995,02
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 fore and aft movement caused by propeller thrust – without any dripping water in the bilge.

Tip: Correct bellows pre-tensioning 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 tightness.
brand: PSS
Availability: Low stock
SKU: OB-BB-02-50M-312
Product group:
category:
Engine technology
PSS-Dichtung 50 mm Welle
€995,02
€995,02

  • Mechanical face seal – no dripping, no readjustment as with classic stuffing boxes
  • Floating carbon flange automatically compensates for misalignment and shaft vibration
  • Pre-tensioned stainless steel rotor keeps sealing surface in constant 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 Inner Diameter 3″
Sealing Principle Mechanical Shaft 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 Sealing 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 Attachment Hose clamps to bellows and stern tube
Rotor Attachment Set screws on the shaft

PSS

Gewicht (ca.): 0.11 kg