VNII NP-231 grease
TU 38.1011220-89
VNII NP-231 is a silicone fluid thickened with DG-100 carbon.
Range of use
The heat-resistant VNII NP-231 grease is used for lubrication of enclosed worm-screw mechanisms, slow-speed roller and friction-type bearings within the temperature range from -60°C to +250°C and at the residual pressure of 666.5 Pa.
Specifications
| Index name |
Norm |
| Drop point, °C, min. |
— |
| Penetration at 25°C, 0,1 mm |
310-340 |
| Point of break at 20°C, Pa |
250-450 |
| Viscosity at 0°C and rate of deformation average gradient 10s-1, Pa•s, max. |
50-75 |
| Colloid stability, %, max. |
8 |
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