FIXODROP
Definition
Fixodrop is a fluorinated epilame, a registered trademark of the manufacturer Moebius. It is the most widely used epilame product in professional watchmaking.
Composition and principle
Like any epilame, Fixodrop forms an invisible molecular layer on the treated surfaces. This hydrophobic and oleophobic layer prevents the lubricant from spreading outside its operating zone, by counteracting its natural tendency to spread over a clean surface.
Typical applications
Fixodrop is applied to surfaces in contact with oil, but which must not be lubricated themselves. This is the case of the sides of the escape wheel, the pallet (lever) jewels, or the inner walls of the barrel around the spring. The product thus keeps the oil as close as possible to the actual friction areas.
Usage precautions
Fixodrop is a volatile product that evaporates quickly once the bottle is opened. It must be kept in an airtight container to preserve its effectiveness over time.
Ultrasonic cleaning removes the factory-applied epilame layer. A new Fixodrop treatment is then necessary before reassembly, otherwise the lubricants may migrate out of their intended zone.
See also
For the general principle of the treatment, see Epilame. For the application of the oils themselves, see Lubricants.
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