Hynautic Hydraulic Steering Fluid for Marine Use

Marine Hynautic Steering Fluid is a mineral-based hydraulic oil designed for Seastar, Baystar, and Hynautic steering systems. It features low foaming and anti-wear properties to protect pumps and valves from corrosion and wear.

Product Benefits:

• Compatible with Baystar, Seastar, and Hynautic steering systems
• Mineral base oil formulation
• Anti-wear additives
• Enhanced corrosion protection
• Suitable for UK hot and cold temperatures
• Contains anti-foaming agents
• Excellent seal material compatibility

Please contact us for system compatibility enquiries.

Product Specifications:

• Manufactured to Mil-PRF-5606H standards
• Not approved for aircraft or aviation use
• Intended for marine steering systems only

Product Test Data:

• Appearance: Yellow / Undyed
• Specific Gravity @ 15.6°C: 0.865
• Kinematic Viscosity @ 40°C (cSt): 14.74
• Kinematic Viscosity @ 100°C (cSt): 4.19
• Viscosity Index: 209
• Flash Point (COC °C): 158
• Pour Point (°C): -42