MILLUBE™ ST‑150U – Environmentally Acceptable Stern Tube Bearing Oil (VGP‑Compliant)
About the MILLUBE™ ST‑150U
MILLUBE™ ST‑150U is an environmentally acceptable stern tube bearing oil formulated with fatty‑acid‑ester base oils.
It provides excellent lubrication and rust‑prevention performance even under harsh operating conditions using natural seawater.
Engineered for demanding marine applications, MILLUBE™ ST‑150U maintains stable lubrication during the critical initial operation period—when bearing issues are most likely to occur—while delivering enhanced load‑carrying capability through its higher viscosity grade.
The product fully complies with the 2013 Vessel General Permit (VGP) requirements, meeting strict criteria for biodegradability, low toxicity, and low bioaccumulation to support marine environmental protection.
Features
- Environmentally acceptable lubricant compliant with 2013 VGP requirements
- Excellent lubricity and corrosion‑prevention performance in natural seawater
- Stable lubrication during initial operation and break‑in periods
- Higher viscosity grade for applications requiring increased film strength
- Certified by stern tube seal equipment manufacturers
- High environmental safety: biodegradable, low toxicity, and low bioaccumulation
- Recipient of an environmental technology award
Structure & Basic Information
- Chemical nature: Fatty acid esters
- Appearance: Transparent liquid at 25 °C
- Flash point: 340 °C
- Pour point: −25 °C
- Kinematic viscosity (40 °C): 158 mm²/s
- Kinematic viscosity (100 °C): 24.1 mm²/s
- Viscosity index: 185
Applications
- Stern tube bearing lubrication for marine vessels
- Marine applications requiring VGP‑compliant, environmentally acceptable lubricants (EALs)
Packaging
- 200 L drum
- 20 L pail
- 18 L can
