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Stern Tube Seal

medium
Propeller shaft stern tube sealing systems

Known Models (4)

Blohm+Voss (Aegir) Marine Stern Tube Seal
Blohm+Voss (Aegir) Marine Stern Tube Seal
Shaft diameter 150-800mm · Propulsion Shaft Line · Lip Seal Stern Tube
type: Lip Seal Stern Tube
Common Failures:
  • • Seal lip wear
  • • Air seal pressure fluctuation
  • • Liner surface damage
  • • Aft seal oil contamination with seawater
Service: Multiple seal arrangement (typically 3-4 seals). Monitor aft seal oil condition for seawater ingress. Drydock seal replacement.
Spares: Blohm+Voss (Aegir): Dichtungs-Elemente und Verschleißmesswerkzeuge an Bord vorhalten. Lead time: 4-8 Wochen.
📋 Datenblatt 3D-Ansicht
Duramax Marine ROMOR Water-Lubricated Bearing
Duramax Marine ROMOR Water-Lubricated Bearing
Shaft diameter 75-1000mm · Propulsion Shaft Line · Water-Lubricated Stern Tube Bearing
type: Water-Lubricated Stern Tube Bearing
Common Failures:
  • • Bearing surface wear
  • • Shaft sleeve corrosion
  • • Debris ingestion damage
Service: EPA VGP compliant (no oil). Composite material — excellent shock resistance. Monitor clearances via poker gauge.
Spares: Duramax Marine: Dichtungs-Elemente und Verschleißmesswerkzeuge an Bord vorhalten. Lead time: 4-8 Wochen.
📋 Datenblatt 3D-Ansicht
Thordon Bearings SXL Water-Lubricated Bearing
Thordon Bearings SXL Water-Lubricated Bearing
Shaft diameter 100-900mm · Propulsion Shaft Line · Water-Lubricated Stern Tube Bearing
type: Water-Lubricated Stern Tube Bearing
Common Failures:
  • • Bearing stave wear
  • • Shaft sleeve erosion from sediment
  • • Water flow restriction
  • • Alignment issues
Service: Seawater-lubricated — zero pollution risk (EPA VGP compliant). Monitor bearing clearances. Replace staves when clearance exceeds limit.
Spares: Thordon Bearings: Dichtungs-Elemente und Verschleißmesswerkzeuge an Bord vorhalten. Lead time: 4-8 Wochen.
📋 Datenblatt 3D-Ansicht
Wärtsilä (Cedervall) Simplex Compact Seal
Wärtsilä (Cedervall) Simplex Compact Seal
Shaft diameter 200-1000mm · Propulsion Shaft Line · Lip Seal Stern Tube
type: Lip Seal Stern Tube
Common Failures:
  • • Lip seal wear causing oil leakage
  • • Chromium liner scoring
  • • Air seal chamber pressure loss
  • • Spring tension loss
Service: Monitor stern tube oil consumption for seal wear. Replace seals at drydock. Check chromium liner for scoring. MARPOL — zero discharge target.
Spares: Wärtsilä (Cedervall): Dichtungs-Elemente und Verschleißmesswerkzeuge an Bord vorhalten. Lead time: 4-8 Wochen.
📋 Datenblatt 3D-Ansicht