Castrol Hysol SL 37 XBB

Castrol Hysol SL 37 XBB is a high-performance semi-synthetic metalworking fluid developed using advanced XBB technology for consistent, long-lasting machining performance.
Completely free from biocides, boron, and chlorine, this next-generation formulation helps meet the latest waste management and environmental regulations while providing exceptional fluid stability and operator safety.

Engineered for cleaner operations and lower maintenance, Hysol SL 37 XBB delivers superior machining results, reduced downtime, and extended tool life — making it the ideal choice for modern manufacturing environments.

Enhanced Machining and Surface Finish

The innovative additive package in Castrol Hysol SL 37 XBB is designed to improve tool lubrication, enhance surface finish, and reduce friction during cutting.
Its stable semi-synthetic base helps maintain consistent performance in a range of machining conditions, while excellent wetting properties reduce coolant drag-out and keep both machines and components cleaner.

With its low-foam formulation, Hysol SL 37 XBB performs reliably in high-pressure and high-speed systems, ensuring smoother operation and consistent precision, even in demanding applications.

Why Choose Castrol Hysol SL 37 XBB?

Castrol Hysol SL 37 XBB represents the next generation of high-performance, environmentally responsible metalworking fluids.
Its biocide-, boron-, and chlorine-free formulation allows you to meet tightening environmental standards without compromising productivity or quality.

With Castrol’s XBB technology, this fluid ensures stable pH levels, longer fluid life, and outstanding machining performance, making it a dependable choice for workshops aiming to lower costs and operate more sustainably.

Castrol Hysol SL 37 XBB is suitable for both large central systems and individual sump machines, offering flexibility and reliability across various production setups.

It is specifically designed for machining steel and ferrous alloys, though its balanced formulation also supports a range of general-purpose metalworking operations.
The product’s exceptional stability and anti-corrosion performance make it a trusted choice in sectors such as automotive, heavy engineering, and general manufacturing.

Castrol Hysol SL 37 XBB High-Performance Semi-Synthetic Soluble Metalworking Fluid Advantages:

• Biocide-, boron-, and chlorine-free formulation – supports compliance with current environmental and waste treatment legislation.

• Extended fluid life – resists microbial degradation, helping to minimise maintenance and reduce operational downtime.

• Low-foam properties – ensure reliable performance in modern high-speed, high-pressure equipment.

• Advanced lubrication system – helps enhance tool life and improve surface finish, particularly on steel machining.

• Excellent wetting properties – reduce coolant carry-off and help maintain cleaner machines and components.

• Environmentally responsible – meets boron-free and biocide-free waste management requirements, aligning with sustainable manufacturing standards.

Recommended Concentrations:

Grinding 5- 7%
General Machining 5- 8%
Drilling 7-10%
Reaming and Tapping 7-10%
Broaching 8-10%
Water range: 50-800 ppm CaCO3

Storage;

To avoid product deterioration always keep the container/drum tightly sealed. Store the product in a cool, dry place away from direct sunlight. Prevent exposure to frost and avoid water ingress.

For optimum product stability, it is preferable to store the product indoors between 5°C and 45 °C / 41°F and 113°F.
For more details, please refer to the product safety data sheet.

Download Technical Data Sheet

Download Safety Data Sheet

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