Stern Tube Seal Service

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Ensuring Watertight Integrity and Compliance

At AstroTech Marine, we recognize that the stern tube seal is one of the most critical components for the operational safety, environmental compliance, and reliability of your vessel. A compromised or failed seal can lead to costly downtime, catastrophic oil-to-sea leakage, and severe environmental penalties.

Our team of specialised marine engineers provides a complete suite of services for all major stern tube seal manufacturers (including Wärtsilä, SKF, John Crane, and others), ensuring maximum integrity and minimal risk. We offer comprehensive service, repair, and replacement for both oil-lubricated and water-lubricated systems.

We meticulously execute every service utilizing OEM-approved procedures and specialized tooling. Our expertise spans from routine diagnostic inspection and seal element renewal to full assembly overhaul, liner inspection, and bearing assessment.

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Ensuring Watertight Integrity and Operational Compliance

At AstroTech Marine, we recognize that the stern tube seal is one of the most critical components for the operational safety and environmental compliance of your vessel. A failed seal can lead to costly downtime, catastrophic oil-to-sea leakage, and severe environmental penalties.
Our Comprehensive Stern Tube Seal Solutions

Our specialized marine engineers provide a complete suite of services for all major stern tube seal manufacturers (including Wärtsilä, SKF, and John Crane), ensuring maximum reliability and minimal environmental risk.

We offer complete service, repair, and replacement for both oil-lubricated and water-lubricated systems, including:

  • Routine Inspection & Diagnostics:

    Using advanced thermal and visual inspection tools to detect early signs of wear, misalignment, or leakage.

  • Seal Element Replacement

    Precise renewal of lip seals, ensuring perfect fitment and zero-leak performance.

  • Aft and Forward Seal Renewal:

    Complete service of both the propeller-side (aft) and engine-room-side (forward) seal assemblies.

  • Condition Monitoring

    Checking and optimizing header tank pressures and oil quality to prevent premature seal failure.

  • Liner and Bushing Inspection

    Thorough examination of the stern tube liner and white metal bearings for signs of scoring or wear that can compromise seal life.

  • Emergency Repair

    Rapid response and repair solutions to address sudden seal failures and prevent vessel detention.

Why Choose AstroTech Marine for Seal Service?
  • Specialized Team:

    Skilled engineers with OEM and shipyard-level expertise.

  • Comprehensive Capability:

    Mechanical, electrical, and hydraulic services under one roof.

  • Quality Assurance

    Every overhaul and test meets IMO and class society requirements.

  • Regional Coverage

    Serving ports and shipyards across the UAE and GCC region.

  • Comprehensive Reporting

    Detailed service documentation and performance certification.

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