TSp — 10

Oil TSP- 10 (GOST 23652-79) is produced from sweet crude oil, a high viscosity deresined residual component and a low-viscosity distillate component with a low pour point are used for this purpose. In addition to extreme pressure additive, oil contains pour point depressant.
Oil is used in all seasons in the Northern areas and as a winter oil in the middle climatic regions for lubrication of spur gears, helical-bevel and worm gears operating at contact voltages up to 1500-2000 MPa and oil temperatures within the scope up to 100-110 °C.
Kinematic viscosity at 100 °C, mm2/ s: 10
Kinematic viscosity at 40 °C, mm2/ s: —
Viscosity index, not less than: 90
Flash point in open cup, not lower than, °C: 128
Pour point, no more than, °C -40
Density at 20 °C, kg/cu.m, not more than: 900
Sulphur content, %, not less than: 1.6
Mechanical impurities, mass %, not more than: 0.02
The mass of phosphorus, %, not less than: —
Mass fraction of barium ,%, not less than: —