1. The appropriate viscosity, good viscosity-temperature characteristics. In general the viscosity of hydraulic oil is usually 15 to 68mm2 / s between the
2.. Pure texture, less impurities, good lubricating properties.
3. Of metal and sealed pieces of good compatibility, anti-foam, anti-emulsification, corrosion resistance, rust resistance.
4. on the heat, oxidation, hydrolysis and good shear stability.
5. volume expansion coefficient, specific heat capacity large.
6 . hydraulic oil flow point and low freezing point, high flash and fire.
7. the human body without injury, and low cost.
(This article reproduced from http://www.dgybl.com)