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.
Castaldo Econosil® Jewelry Molding Rubber is a harder, firmer but still flexible version of our Castaldo Super High Strength™ silicone jewelry molding rubber at a lower cost.
Firmer molds mean less variation in final cast weights, greater detail and less distortion. Molds compress less during injection and thus avoid squeezing off wax flow through thin channels. It’s ideal for filigree and other fine details. Rubber shrinkage is only 1.1%.
Just like Castaldo Super High Strength jewelry molding rubber, Econosil is a putty-like material that makes strong, tough, production rubber molds. Molds made of Castaldo Econosil cut like butter, give waxes with a high shine finish and require no messy sprays or powders. Waxes self-release easily.
For Low Temperature Metal Direct Casting
Econosil withstands temperatures up to 660°F/ 350°C. It can be used to cast lead, pewter, tin, zinc and other low temperature melting alloys.
Econosil a brick-red/brown color and is lined with special release paper on both sides. Complete instructions are enclosed in each box.
Mold Rubber sold in 5 lb. boxes of strips