The absolute viscosities and densities o f j v e lubricant basejuidr (unformulated) were determined at pressures to 150,000 psig and temperatures to 300 F with a falling weight viscometer. The lubricants investigated were a sebacate ester, a T M P ester, S A E 20 mineral oil, a 5 P 4 E polyphenyl ether, and a methyl chlorophenyl silicone. The falling weight viscometer and experimental procedures are discussed. Measured properties of the sebacate ester are in excellent agreement with the results of previous investigators. Computergraphics generated equations of uiscosip, density, and pressure coeficient of viscosip us pressure at each temperature are presented.
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