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All-Union State Standards 1861-73
К-12 and К-19 are compressor oils produced from refined oil. They are used for greasing piston and rotary compressors as well as blast-engines.
Guarantee period of storage – 5 years from the day of manufacture. Index Name | К-12 | К-19 | Kinematic viscosity at 100°С, mm²/s | 11–14 | 17–21 | Acid number, mg КОN/g, not more than | 0,15 | 0,04 | Temperature, °С: | | | - flash temperature in an open crucible, not lower than | 216 | 245 | - solidification temperature, not higher than | −25 | −5 | Fraction of total mass, %, not more than: | | - mechanical impurities | 0,007 | - water | None | - water-soluble acids and alkalis | None | - sulphur | 0,3 | Ash level, %, not more than | 0,015 | 0,010 | Coking ability, %, not more than | 0,3 | 0,5 | Stability against oxidation: | | | - sediment after oxidation, %, not more than | 0,25 | 0,015 | Corrosive influence on metals | Withstands |
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