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CASTALDO Jewelry Molding Rubber has been the industry standard for more than 40 years. It continues to be the best jewelry molding rubber available for lost wax casting.
A superior quality medium hardness jewelry molding rubber with extreme tear and tensile strength for every application including spirals, cores, cut-outs & plugs as well as for general purpose use. Can be used with Econosil® on the outside for additional stiffness or on the inside for additional dimension stability.
Vulcanizes at 165°-176° C / 330° - 350° F.
Medium shrinkage - 2.3%.
Color: traditional tan.
Mold Rubber sold in 5 lb. boxes of strips