Dimethyl lwil silicone se yon polymère ki konpoze de yon inòganik silisyòm-oksijèn chèn prensipal ak chenn bò methyl.
Li se yon likid san koulè nan tanperati chanm ak solubl nan dlo. Its structural formula is as follows: Dimethyl silicone oil has a wide range of applications due to its viscosity range (from 0.65 to 1,000,000 2mm/s), small temperature-viscosity coefficient, large expansion coefficient, high flash point, resistance to high and low temperatures, weather resistance, chemical corrosion resistance, radiation resistance, low surface tension, high insulation, and shear rezistans.