WS-500A Water-Soluble Oil for Cutting & Grinding


Designed with a proprietary extreme pressure (EP) additive, Rustlick™ WS-500A is excellent for machining titanium, Inconel X, Aluminum, Rene 41, stainless steel, and other metals.

Rustlick™ WS-500A cutting and grinding fluid is compatible with CNC machining and does not contain chlorine or sulfur, thereby reducing disposal costs.


  • Water-soluble oil
  • Non-Chlorinated EP additives
  • General purpose coolant
  • Thin oily-film corrosion protection
  • Increases tool life


  • Light to moderate-duty operations
  • General machining
  • Ferrous metals
  • Aluminum
  • Titanium
  • Limited use for brass, bronze, and copper

Packaging Details

Part No. US Units/Case Net Contents Container Type Shelf Life
74555 1 55 gal drum 1 year
74055 1 5 gal pail 1 year

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Appearance Dark brown
Class Water-soluble oil
pH at 10% 9.2
Specific Gravity 0.93
Density 7.8 lbs/gal
Flash Point 320°F (160°C)
Total Chlorine None
Mineral Oil 74%
Water Solubility Soluble
Dilution Ratios Milling, Drilling, boring, turning, threading, broaching: 10:1-20:1; Form grinding: 10:1-15:1; Centerless grinding: 25:1-30:1
Refractometer Readings (% Brix) 10:1=11; 20:1=5.6; 30:1=3.1

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