ULTRACUT® 375R Semi-Synthetic Metalworking Coolant

Ultracut 375R is a premium heavy-duty, biostable, semi-synthetic metalworking fluid with chlorinated extreme pressure additives.


  • Heavy-Duty semi-synthetic metalworking fluid
  • Chlorinated EP additives
  • Biostable and resistant to microorganisms
  • Provides hard water stability
  • Low Foaming
  • Easy care, extends operational coolant life
  • Ideal for multi-material, multi-operational shops
  • Cleaner machines and parts


  • Heavy-duty operations
  • General machining, grinding, sawing, turning
  • High volume/high pressure coolant systems
  • Recommended for ferrous metals
  • Limited use for aluminum, brass, bronze, and copper
  • Not recommended for titanium


  • Ferrous Metals
  • Brass, Bronze, and Copper
  • Limited use on Aluminum
  • Not recommended for Titanium

Packaging Details

Part No. US Net Contents Container Type Units/Case Shelf Life
74905 5 gal pail 1 1 year
74955 55 gal drum 1 1 year

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Appearance / Physical State Translucent amber
Class Semi-Synthetic
pH Value 9.6
Specific Gravity 1.01
Density 8.3 lbs/gal
Flash Point >200°F (93°C)
Total Chlorine 4%
Mineral Oil 30%
Water Solubility Soluble
Dilution Ratio Milling, Drilling, Turning, Threading: 10:1–20:1
Centerless and Surface Grinding: 25:1–30:1
Refractometer Readings 10:1=7.2

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