Compounded Steam Cylinder Oil 460CT - Hallett Steam Oils - STO010
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Compounded Steam Cylinder Oil 460CT
Premium Heritage & Steam Engine Lubricant
This 4Boats / Aftermarket 460CT Compounded Steam Cylinder Oil is a specialized lubricant engineered for heritage steam engines operating under lower-to-moderate pressures and saturated steam conditions. Formulated using the renowned Hallett Steam Oils technology, it features fatty compounds that allow the oil to emulsify in the presence of moisture. This ensures a consistent, adhesive lubricating film on internal cylinder walls and valve blocks where standard mineral oils would be washed away.
Key Features
- ✔ Yellow Metal Safe: Won't stain brass, bronze, or copper
- ✔ Emulsifying Formula: Superior performance in "wet" steam
- ✔ Paint Protection: Formulated to be gentle on engine paintwork
- ✔ Low Carbon: Reduces deposits on pistons and valves
Technical Specs
| ISO Viscosity Grade | 460 |
| Density @ 15°C | 0.900 |
| Viscosity @ 40°C | 460.0 cSt |
| Viscosity @ 100°C | 28.9 cSt |
| Flash Point (COC) | >200°C |
| Max Boiler Pressure | 150 PSI |
Compatibility / Fitment Guide
| Application Type | Recommended System | Steam Type |
|---|---|---|
| Traction Engines | Full size & Miniature | Saturated |
| Steam Locomotives | Preserved lines / Heritage | Saturated / Light Superheat |
| Steam Boats | Marine Reciprocating Engines | Saturated |
| Stationary Engines | Factory & Museum Displays | Saturated |
OEM Cross Reference
| Hallett Steam Oils | STO010 / SCO460CT / CB211 |
| Morris Lubricants | Compound Steam Cylinder Oil 460 |
| Sasol | Steam Cylinder C Oil 460 |
| Lubrita | Steam Cylinder Oil 460 |
Questions & Answers
Is this oil safe for brass and copper fittings?
Yes, this formula is specifically designed to be non-staining and safe for use with phosphor bronze, brass, and copper fittings commonly found in heritage steam machinery.
How do I know if I need Compounded or Non-Compounded oil?
Compounded oil (like this 460CT) is required for most engines where steam is not recovered, as it sticks to metal surfaces even when "wet" steam is present. If you recover your condensate for boiler feed, you should use a non-compounded (straight) oil instead.
What is the maximum operating temperature for this oil?
This oil is designed for steam temperatures up to 190°C (374°F) and boiler pressures up to 150 PSI.
Note: Please verify your engine's requirements against the technical specifications above. This product is for steam cylinder lubrication and is not recommended for condensate recovery systems. Visit 4boats.co.uk for more technical support.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
