Description
Marine Stern Tube Lubricant
This product name appears to refer to a lubricant for marine stern tube systems, which support the propeller shaft and its bearings. The exact formulation, viscosity grade, approvals and operating limits should be confirmed against the manufacturer's technical data sheet before publishing a product datasheet.
Product Description
Mobil Stern Tube Lubricant is a high-viscosity marine lubricant designed for Cedervall-type stern tube bearings and selected ship stabiliser bearings. It uses mineral base oils with emulsifiers, surfactants and corrosion inhibitors to maintain lubrication and protection when seawater enters the bearing system.
Features and Benefits
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Seawater emulsification: Forms a stable, adhesive water-in-oil emulsion to help maintain lubrication when seawater enters the system.
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Rust and corrosion protection: Protects bearing surfaces exposed to seawater.
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Water-wash resistance: Helps retain the lubricating film under wet operating conditions.
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Viscosity retention: Supports effective lubrication and helps control oil consumption.
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Multipurpose capability: Can be used in specified stern tube and marine stabiliser bearing applications.
Applications
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Marine stern tube bearings, particularly Cedervall-type systems
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Ship fin stabiliser bearings
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Specified trunnion bearings in marine stabiliser systems
Specifications and Approvals
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Approved by Brown Brothers and Company Ltd.
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Approved by William Denny and Brothers Ltd.
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Approved by AEG
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Approved by Deutsche Werft
Typical Physical Characteristics
Property
Typical Value
Base Oil Type
Mineral
Viscosity @ 40°C
385 mm²/s
Viscosity @ 100°C
24 mm²/s
Viscosity Index
82
Density @ 15°C
0.915 kg/L
Flash Point (COC)
246°C
Pour Point
+10°C
Seawater Rust Test
Pass
Emulsion Characteristics
Thick and stable
Storage and Handling
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Store in sealed original containers in a cool, dry location.
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Prevent contamination by dirt and other lubricants.
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Avoid prolonged skin contact and follow the product Safety Data Sheet (SDS).
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Prevent spills from entering drains, waterways or the marine environment.
Product Category
High-Viscosity Marine Stern Tube Lubricant
Main Applications: Marine Propeller Shaft Bearings | Cedervall Stern Tubes | Fin Stabilisers | Marine Bearing Systems
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