Bergeon 4509 silicon 7 sealing watch grease 5 g

Bergeon 4509 is high vacuum pressure waterproof watch case sealant. Will prevent leakage of moisture into the case due to worn-out joints or ill-fitting gaskets even when the watch is subjected to extremes of pressure variations. Will not evaporate, nor affect watch oils. Unaffected by temperatures changes. Will not run, harden or break down on the threads. Completely unaffected by moisture, salts acids, fungus alkali or sweat.