Castaldo® Gold Label® contains more pure natural rubber making it softer and more flexible.
The superior qualities of Castaldo Gold make it the ideal rubber for difficult molds containing undercuts, filigree or multiple settings.
Easy to pack and highly flexible so that wax patterns release smoothly.
Vulcanizes at 310°F for 15 minutes per 1/4" of mold frame thickness. Rubber is 1/8" thick
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