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Bright Stock B.S.

Bright Stock B.S. 150

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Bright Stock refers to lube base oils of high viscosity produced by atmospheric distillation and vacuum distillation, then extracting and dewaxing solvents from residual oils. And finally hydro finishing. Bright stock is used to make lubricating oils of the desired viscosity by mixing with lubricating oils of low viscosity (used for adjusting the degree of viscosity). stock is usually blended in lubricating oils of high viscosity such as gear oil, marine diesel engine oil, and cylinder oil. The word ‘Bright Stock’ comes from the method of producing bright colored oils by blending naphtha with dark-colored Cylinder Stock, leaving it through to winter, extracting wax ingredients from it, and then distilling to remove the floating naphtha solution. Bright stock is not only blending material for lubricating oils, but also a product itself. For instance, Stock made from an Iran crude oil is quenching oils with excellent performance.

Specification of Bright Stock

CHARACTERISTICSUNITSRESULTTEST METHOD
AppearanceClear and brightVisual
Color3ASTM D1500
DensityKg/m³910ASTM D1298
Kin. [email protected] 40°CcSt490ASTM D445
Kin. [email protected] 100°CcSt32ASTM D445
Viscosity Index95ASTM D2270
Flash Point°C315ASTM D92
Pour Point°C-6ASTM D97
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