Armatol-238 grease (TU 38.101812-83) is a mix of castor and synthetic oils, thickened by modified aerosil; it contains graphite. Armatol-238 grease is partially soluble in liquid and gaseous hydrocarbons, it is partially dissolved in gasoline.
Armatol-238 grease works at temperature -50°?…+120°?. It used for hermetic lock-up devices of surface oil-field equipment petroleum’s and gas’s deposits. It used at the content in gas less than 25% (H2S+CO2).
Properties
| Characteristics | Norm |
| Viscosity effective, Pa, at 20°?, no more | 150 |
| Strength at 20°?, Pa, not less | 150 |
| Drobfall temperature, °?, not more low | 160 |
| Colloid stability, % of the allocated oil, no more: | 15 |
| Penetration at 30°?, 0,1 mm | 300-360 |
