Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or tensile stress. In everyday terms (and for fluids only), viscosity is “thickness”. Thus, water is “thin”, having a lower viscosity, while honey is “thick”, having a higher viscosity. Put simply, the less viscous the fluid is, the greater its ease of movement (fluidity).
Viscosity describes a fluid’s internal resistance to flow and may be thought of as a measure of fluid friction. All real fluids (except superfluids) have some resistance to stress and therefore are viscous, but a fluid which has no resistance to shear stress is known as an ideal fluid or inviscid fluid.
EVERYDAY CONSUMABLE GOODS IN RELATION TO GENERAL PRODUCT VISCOSITY IN CENTIPOSE (CPS)
|Water @ 70° F / 21° C||1 - 3||centipoise (cps)|
|Blood or Kerosene||10||centipoise (cps)|
|Ethylene Glycol or Anti-Freeze||15||centipoise (cps)|
|Motor Oil (SAE 10)||50||centipoise (cps)|
|Corn Oil||65||centipoise (cps)|
|Unfilled Rigid Urethane Resin||80 - 120||centipoise (cps)|
|Maple Syrup or Motor Oil (SAE 30)||150 - 200||centipoise (cps)|
|Castor Oil or Motor Oil (SAE 40)||250 - 500||centipoise (cps)|
|Glycerin or Motor Oil (SAE 60)||1,000 - 2,000||centipoise (cps)|
|Urethane Rubbers||1,000 - 2,000||centipoise (cps)|
|Honey or Corn Syrup||2,000 - 3,000||centipoise (cps)|
|Molasses||5,000 - 10,000||centipoise (cps)|
|Chocolate Syrup||10,000 - 25,000||centipoise (cps)|
|Silicone Rubber||14,000 - 40,000||centipoise (cps)|
|Ketchup or Mustard||50,000 - 70,000||centipoise (cps)|
|Peanut Butter or Tomato Paste||150,000 - 250,000||centipoise (cps)|
|Lard or Crisco Shortening||1,000,000 - 2,000,000||centipoise (cps)|
|Caulking Compound||5,000,000 - 10,000,000||centipoise (cps)|
|Window Putty||100,000,000||centipoise (cps)|
These are general averages and NOT specifics, not all products fit neatly in this chart. Please check Technical Bulletins for specific mixed viscosity of products.