PFMS–4S is a poly-methyl-phenyl-siloxane fluid thickened with colloidal graphite.
The heat-resistant PFMS–4S grease is used for lubrication of aircraft friction units, low-speed roller bearings and screw ball joint drives within the temperature range from -30°C to +300°C with occasional short-time surges of up to 400°C.
|Drop point, °C, min.||180|
|Penetration at 25°C, 0,1 mm||175-205|
|Point of break at 20°C, Pa||1000-1500|
|Viscosity at -50°C and rate of deformation average gradient 10s-1, Pa•s, max.||500|
|Colloid stability, %, max.||10|