TSI 321 Bearing Oil

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Excellent on bearings for ultimate free-spool. TSI 321 was developed for use by N.A.S.A. in the Apollo Program. 321 is unique because of the extreme temperature range in which it operates as well as its ability to bond with the metal creating a thin film of lubrication without a greasy build-up. It will prevent metal corrosion and is not harmful to most plastics or high alloy metals.


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