Steaval D-150 is a heavy-bodied, compounded industrial lubricant specifically engineered for the unique and demanding environments of steam cylinders, valves, and slow-moving, high-torque enclosed worm gear sets. It is formulated with high-quality paraffinic base oils and enriched with acidless tallow (fatty oil) to ensure the lubricant maintains a tenacious, "oily" film that adheres firmly to metal surfaces even in the presence of wet steam or extreme heat. This specialized chemistry allow the oil to emulsify with water, providing a consistent lubricating barrier that prevents the "washing away" effect common in steam applications. It is the professional choice for protecting internal components from scuffing, wear, and the corrosive effects of moisture, ensuring smooth operation and extended service life for stationary steam engines and heavy-duty industrial reducers operating under severe moisture-rich conditions.