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Castrol Hysol SL 37 XBB is an advanced semi-synthetic coolant-lubricant emulsion designed for increased performance and reliability in metalworking processes. The product is free from boron and formaldehyde-releasing agents, ensuring a safer working environment and easier compliance with health, safety and environmental regulations. Thanks to its innovative additive package, the emulsion offers excellent stability, extended service life, and effective cooling and lubrication for even the most demanding machining operations.

Application:

Castrol Hysol SL 37 XBB is suitable for machining low-, medium- and high-alloyed steels, stainless steels, cast iron, aluminum alloys and non-ferrous metals. It is recommended for processes such as grinding, milling, turning, drilling, reaming, threading and broaching. The fluid can be used in both central systems and individual machine reservoirs.

Advantages and benefits:

• Boron- and formaldehyde-free formulation: ensures compliance with occupational safety and environmental regulations.
• High emulsion stability: longer service intervals, reduced downtime, and lower maintenance costs.
• Low foaming tendency: ensures optimal performance even with hard water.
• Extended tool life: effective cooling and lubrication during steel machining.
• Reduced fluid consumption: good wetting properties minimize coolant drag-out, keeping machines and parts clean.

Classification according to standards:

• DIN 51361 – pH value of 5% emulsion: 9.4
• ASTM E70-97 – Refractometer factor: 1.1

Approvals and certifications:
The product meets high industrial standards for occupational safety and environmental protection. It is boron- and formaldehyde-free, making it suitable for modern and eco-friendly manufacturing processes.

Technical data:

Recommended working concentrations:

• Grinding: 5–7%
• General machining: 5–8%
• Drilling: 7–10%
• Reaming and threading: 7–10%
• Broaching: 8–10%

Storage:
Store between 5°C and 45°C in tightly closed containers. Protect from water contamination and freezing. Avoid direct sunlight.

Documents to download:
Product data sheets