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Chemtool Announces NuSol® 21 MW New Technology Metalworking Fluid Semi synthetic/Synthetic Replacement

Chemtool Incorporated announces NuSol® 21 MW. The new metalworking fluid is unlike any other fluid on the market today—incorporating a proprietary process that promotes very high productivity and minimal downtime for the user.  NuSol® 21 MW is an excellent replacement for general purpose synthetic and semi-synthetic metalworking fluids in machining and grinding applications and in central systems. 

NuSol® 21 MW is formulated with a preformed emulsion, based upon a high viscosity, high molecular weight hydrocarbon base stock that provides superior boundary lubrication. And the small particle size provides a very durable and uniform lubricant film, enhanced cooling, a clear running fluid, and exceptional hard water stability.

Features of NuSol® 21 MW

  • Very low VOCs/eliminates odors
  • Excellent corrosion protection for tooling, equipment and parts (even in hard water)
  • Exceptional lubricant film for good tool life and quality finishes
  • Extremely small particle size for superior wetting and excellent hard water stability
  • Rapid tramp oil separation for cleaner system operation

What makes NuSol® 21MW different from other fluids?

“NuSol® 21 MW is unique in the industry," says Mark Warnock, Fluids Technical Manager. "It has preformed micro-emulsion of very high viscosity oils and is much more stable. This makes it less subject to biodegradation in the sump. It also has better film strength and is meant to be a ‘fighting grade’ fluid for general machining of cast iron and steel."

"It is a simplified formula that is specifically beneficial for job shops. It’s an inexpensive, high-performance fluid with all the benefits of the NuSol® line. It has excellent heat removal and low carry out, so there’s less fluid loss (and replacement). NuSol® 21 MW is a high productivity fluid for the end user. The customer uses significantly less fluid over time. They also LESSEN DOWNTIME by not needing to shut down their machine to clean windows, the machine tool itself, change the fluid, or the sump as often (since the fluid does not biodegrade as rapidly, and is off-white to translucent—making it much easier to see the machined part through the window)."

NuSol® 21 MW is compatible with cast iron, carbon steel, tool steel and aluminum alloys, has a refract index multiplier of 3.5, high pressure capability, is all metal safe and is excellent for milling, turning, sawing, drilling, reaming, tapping, OD/ID/centerless grinding and tube bending applications.

Since 1963, Chemtool Incorporated is one of the largest manufacturers and custom formulators of lubricants and specialty products in the world, providing technologies and services to solve problems that improve performance, extend service life, provide process improvements and reduce the overall facility costs. Chemtool’s breakthrough technologies include grease, lubricants, metal working fluids, cleaners, corrosion inhibitors, quenchants, diecast and hydraulic fluids.

Chemtool Incorporated is a subsidiary of Lubrizol, a Berkshire Hathaway Company.


Kari Larson, Marketing Manager
Chemtool Incorporated
801 West Rockton Rd.
Rockton, IL 61072

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