Halocarbon silica thickened chlorotrifluoroethylene greases are designed for use in contact with powerful oxidizers. These greases are ideal inert lubricants for valves, seals, gear lubrication and many more applications in aggressive environments. The silica thickened greases should not be used in contact with alkalis, hydrofluoric acid and fluorinating agents.
Determining which Halocarbon inert grease to use will be dependent on the application. Conditions such as temperature, physical conditions and manufactures’ recommendations should be considered to determine which Halocarbon grease to use. Listed below are a summary of the physical properties:
| Halocarbon Grease | NLGI Grade | ASTM Penetration Range | Service Temperature | Minimum Drop Melting Point | Description |
| 32 | 1 | 310-340 | -25 to 175°C | None | Softest grease with broad temperature range. |
| 28 | 2 | 265-295 | -25 to 175°C | None | Less soft grease with broad temperature range. |
| 28LT | 2 | 265-295 | -45 to 95°C | None | Ideal for low temperature applications. |
| 25-5S | 3 | 220-250 | -20 to 175°C | None | Can also be used a thread sealant. |
| 19 | 4 | 175-205 | -25 to 175°C | None | Hardest grease with broad temperature range. |
The silica thickened greases should not be used with fluorine and other fluorine related compounds
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