VNII NP-207 grease

VNIINP-207 grease (GOST 19774-74 and rev. 1, 2, 3, 4) is a blend of silicone fluid and a synthetic hydrocarbon oil thickened with a composite soap; it contains an antioxidant additive. The main performance characteristics of VNINP-207 grease are: waterproof, hygroscopic, increased thermal-oxidative stability at a residual pressure of 666.5 Pa and within the temperature range from -60°C to +200°C



Physical and chemical indicators of VNIINP-207 grease (GOST 19774-74 and rev. 1, 2, 3, 4)

Name of the indicator Norm GOST (TC)
Appearance Homogeneous ointment of light brown to dark brown color
Effective viscosity at -30°C and mean gradient of strain rate 10 s-1, Pa-s, not more than 1400
Tensile strength at 80°C, Pa, not less than 68,6 (0,7)
Colloidal stability under load of 300 g, %, not more than 6,0
Stability against oxidation, mg KOH/g, not more than 1,0
Evaporability at 200°C, 5H, %, not more than 7,0
Corrosive influence on metals Withstands
Content of free alkali calculated as NaOH, %, not more than 0,15
Content of water Absence
Content of mechanical impurities with a diameter more than 0,150 mm Absence