cements, rubber to metal
cements, rubber to metal defined in 1909 yearcements, rubber to metal - Cements, Rubber to metal;
cements, rubber to metal - For cementing rubber or guttapercha to metal, Moritz Grossman, gives the following receipt: Pulverised shellac, dissolved in ten times its weight of pure ammonia. In three days the mixture will be of the required consistency. The ammonia penetrates the rubber and enables the shellac to take a firm hold, but as it all evaporates in time, the rubber is immovably fastened to the metal, and neither gas nor water will remove it.
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