Castaldo® Gold Label 1/8" Mold Rubber Strips


This Castaldo® Gold Label® strip is a more pliable, natural rubber perfect for difficult patterns that might break in a stiffer mold. Castaldo natural mold rubber is made with a high concentration of pure natural rubber, making it pliable and durable. All Castaldo natural organic mold rubber products require a release agent.

Castaldo®—known throughout the jewelry industry for performance, dependability and value—manufactures mold rubber trusted the world over.

Sold in a 5-lb. pack.

  • Brand : Castaldo
  • Material : Rubber
  • Dimensions : 18"L x 2-7/8"W x 1/8"D
  • Cure time : 15 mins. (per 1/4" thickness)
  • Shrinkage : 3-4%
  • Vulcanization temperature : 307°F (153°C)
  • Durometer : 37
  • Form : Strip
  • Country of origin : United States

Please Note:

Organic, natural mold rubber has a shelf life of one year if stored in a cool, dark place. You can extend the shelf life to two years by refrigerating the rubber. Organic mold rubber material should not be exposed to sun or heat; such exposure will shorten its shelf life and will cause it to prematurely cure.

Catalog page: 2020-2021 Tools and Equipment Catalog p.629