KEMEL Stern Tube Seals for Dry Dock Repair and Replacement Planning

Wildon Engineering helps source KEMEL replacement seal rings and stern tube seal products for dry dock maintenance across Australia.

Planning KEMEL replacement seal rings before dry dock gives operators time to confirm the seal arrangement, likely parts requirements and maintenance scope before the vessel is out of service. As an authorised KEMEL distributor, we support shipowners, managers and repair workshops with KEMEL stern tube seal products and procurement enquiries.

When Should KEMEL Stern Tube Seals Be Checked Before Dry Dock?

KEMEL stern tube seals should be reviewed before dry dock when there is known leakage, abnormal lubricant loss in an oil-lubricated arrangement, water contamination, previous seal trouble, or planned shaft and stern gear work. These signs do not identify the failed component by themselves, but they justify closer inspection once the relevant seal and shafting components are accessible.

Pre-dock preparation should include reviewing service records, seal drawings, previous repairs and the vessel’s planned maintenance schedule. Our earlier article on stern tube integrity testing during dry dock also explains why dock access is important for examinations that cannot be completed while the vessel is operating in the water.

For Australian domestic commercial vessels, AMSA’s planned maintenance guidance states that inspection and maintenance should be programmed for the vessel, machinery and equipment, with servicing taking manufacturer requirements into account.

Planning KEMEL Replacement Seal Rings Before Dry Dock

For KEMEL replacement seal rings, we recommend confirming the exact seal arrangement before parts are ordered. KEMEL supports both oil- and water-lubricated stern tube applications, so replacement requirements must match the installed equipment rather than being selected from a generic parts list.

Before finalising the dry dock scope, check:

• Seal model and arrangement: Confirm the installed KEMEL seal type and available identification details.
• Drawings and dimensions: Provide relevant seal drawings, shaft details and part references where available.
• Operating history: Record leakage, lubricant loss, contamination or previous seal-related issues.
• Liner and surrounding components: Include inspection of accessible mating and shaft-area components in the dry dock work scope.
• Spare-part requirements: Confirm required rings and associated parts early enough to support procurement before docking.
• Maintenance coordination: Align seal work with planned shaft, bearing and stern gear inspections where relevant.

Operators can review our KEMEL products in Australia when preparing the parts requirement.

Repair, Replacement or Retrofit: Base the Scope on Inspection

The final scope should follow inspection findings and the applicable KEMEL requirements. A seal-ring change may be appropriate where replacement is identified after inspection, while damage or wear affecting other components can require a broader repair scope.

A retrofit should not be treated as the automatic answer to recurring leakage. It should only be considered where the existing arrangement, vessel requirements and KEMEL product options make an upgrade appropriate. For operators reviewing alternatives, our information on KEMEL Air Seal retrofit options provides a separate starting point for that discussion.

Plan KEMEL Parts Before the Vessel Enters Dock

If you need KEMEL replacement seal rings for an upcoming docking, send us the available seal model, drawings, vessel details, known service history and planned docking date. We can review the KEMEL product requirement and help with parts enquiries before the work begins.

Contact Wildon Engineering to discuss your dry dock parts requirements and request support with KEMEL stern tube seal products for your vessel.

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