SEDA grease (TC 38.1011242-89) - is composed of esters and calcium soap thickened complex, contains antiwear and antioxidant additives. Grease increases the swelling capacity of nitrile and siloxane-based rubbers. SEDA grease is characterized by low volatility, good lubricating and low temperature properties.
SEDA grease is a complex calcium antifriction grease SEDA is used in friction units of electric and starter generators operating at temperatures from - 60 to 180°C. SEDA grease was developed as an alternative to the VNII NP-207. VNII NP-281 grease and, in comparison with it and VNII NP-207, Tsiatim-221 greases at a temperature of 120-130°C, provides 2.5-3.0 times longer service life. SEDA grease is included in the range of greases in accordance with GOST 18241-90.
Physical and chemical indicators of SEDA grease (TC 38.1011242-89)
| Name of the indicator | Norm GOST (TC) |
|---|---|
| Appearance | Smooth ointment of light yellow to brown colour |
| Drop temperature, °C, not lower than | 200 |
| Tensile strength at 50°C, Pa, not less than | 250 |
| Effective viscosity at -50°C and mean gradient of strain rate 10 s-1, Pa, not more than | 2000 |
| Colloidal stability of allocated oil, %, not more than | 15,0 |
| Evaporability at 150°C, 1h, %, not more than | 2,0 |
| Corrosive influence on metals | Withstands |
| Content of water | Absence |
| Content of mechanical impurities with a diameter more than 0,1 mm | Absence |
| Content of free organic acids calculated as mg KOH/g, not more than | 2,0 |