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5mm open-design flower
or slide a ring onto the mandrel
Outside Dimension: 5mm dia
This marking stamp reads "Sterling" in script font
Inside Dimension: 60
Castaldo® Super High-Strength 9.52mm Silicone Mold Rubber Strips, 2.27 kg. Safety Equipment 5mm open-design flowerThis Castaldo Super High Strength silicone mold rubber strip has a medium hardness with extreme tear and tensile strength. It's a general purpose rubber, and works well for spirals, cores, plug and cut outs. No release agent is required with this mold rubber, and shrinkage is just 2. 3%. Castaldoknown throughout the jewelry industry for performance, dependability and valuemanufactures mold rubber trusted the world over. Sold in a 5 lb. pack.
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