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TRUEGARD Semi Synthetic Coolant 266 - 55 Gallon Drum

TRUEGARD Semi Synthetic Coolant 266 - 55 Gallon Drum

by Truegard
SKU 10018700

$884.58 - $884.58
$884.58
$884.58 - $884.58
$884.58

TRUEGARD SS-266 Semi-Synthetic Coolant Concentrate

TRUEGARD SS-266 is a versatile semi-synthetic coolant concentrate engineered for a broad spectrum of grinding and machining operations on steel, copper, and aluminum alloys. It is ideally suited for processes such as drilling, milling, tapping, sawing, and turning, providing reliable performance across diverse manufacturing environments.

When mixed with water, TRUEGARD SS-266 yields a brilliant green solution that is hard water stable and non-gumming, ensuring smooth operation and easy maintenance. Its outstanding detergency keeps workspaces clean, while the absence of sulfur and chlorine enhances safety and user-friendliness.

TRUEGARD SS-266 is formulated with a balanced pH to protect nonferrous metals and maintain gentle contact with operators’ skin, minimizing irritation. The mild pH also helps preserve machine paint, preventing premature wear. Incorporating advanced biocide technology, TRUEGARD SS-266 effectively suppresses excessive bacterial growth, supporting long-term coolant stability and consistent performance.

Refractometer Factor: 3.1

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Product Data Sheet
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Frequently asked questions

Find answers to common questions about our products and services

  • SS-266 is engineered for a broad range of grinding and machining operations including drilling, milling, tapping, sawing, and turning. It is compatible with steel, copper, and aluminum alloys, making it a versatile single-coolant solution for general machine shop environments that work across multiple material types.

  • SS-266 is a concentrate that must be mixed with water before use. The product has a Refractometer Factor of 3.1, which means you multiply your refractometer reading by 3.1 to calculate the actual concentration percentage in the sump - this allows you to monitor and maintain the correct mix ratio using a standard refractometer rather than guessing.

  • Sulfur and chlorine are aggressive extreme-pressure additives that can stain or corrode nonferrous metals like copper and aluminum, and may cause skin irritation with prolonged operator contact. Their absence in SS-266 makes it safer for operators, gentler on mixed-metal workpieces, and more broadly compatible across materials without sacrificing performance.

  • SS-266 is specifically formulated to be hard water stable, so it maintains its emulsion and performance characteristics when mixed with hard tap water and does not require deionized or softened water for standard shop use.

  • The advanced biocide technology in SS-266 actively suppresses excessive bacterial growth within the coolant sump, which is a primary cause of foul odors, coolant breakdown, and shortened fluid life. This helps maintain consistent performance and reduces the frequency of full sump changeouts in normal operating conditions.

  • SS-266 is formulated with a balanced, mild pH specifically to minimize skin irritation during regular operator contact and to help preserve machine paint from premature degradation - both of which can be concerns with more aggressive alkaline metalworking fluids.