Castaldo® Super High-Strength 3/8" Silicone Mold Rubber Strips, 5 lbs.

Quantity (PAK) Price
1 - 2 $46.25
3 - 4 $43.95
5 and above $41.75

The price for higher quantity price breaks will appear in your shopping cart.

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Quantity (Packs) 0.00
Total Price $0.00

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SAFETY DATA SHEETS: View the SDS(s) for the information you need to use this item.


This 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%.

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 : Silicone
  • Dimensions : 18"L x 2-7/8"W x 3/8"H
  • Spool or package quantity : 5 lbs.
  • Cure time : 15 mins. (per 1/4" thickness)
  • Shrinkage : 2.3%
  • Vulcanization temperature : 330°F (166°C)
  • Form : Strip
  • Country of origin : United States

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