| 摘要 |
Stable grease compositions for use with equipment at extremely low temperatures, the greases consisting of about 69 to 78 weight percent polysiloxanes, the balance being tetrafluoroethylene polymer having a molecular weight of 10,000 - 50,000, a softening point of 321.1 percent, particle size less than 30 microns in diameter, and supplied as a 7.5 percent suspension in trichlorotrifluoroethane.
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