Castaldo® Molding Rubber - 5 lb. Ready Cut
Castaldo® Molding Rubber - 5 lb. Ready Cut
Regular price
$59.00
Regular price
Sale price
$59.00
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Castaldo® Molding Rubber. Just enough jewelry molding rubber to make 15-25 standard size jewelry molds. Available in White Label® (regular/firm), Gold Label® (premium/soft) and No Shrink Pink®. Complete instructions are enclosed in each box. Strips measure 18" x 2 7/8th" x 1/8th" (45.7 cm x 7.3 cm x 3 mm). Instructions.
| Gold Label® | White Label® | No Shrink Pink® | |
| Shore A Hardness | 37.3 | 42.1 | 43.2 |
| Vulcanizes at: | 307 ̊F/ 152 ̊C | 307 ̊F/ 152 ̊C | Variable* |
| Rubber shrinkage | 2.1% | 2.3% | As low as 0.0% |
| Elongation before break | 706% | 688% | 728% |
| Tensile strength before break |
Very Strong 2,475 psi 13.9 n/mm² |
Very Strong 2,215 psi 15.3 n/mm² |
Strong 1,116 psi 7.7 n/mm² |
| Tear Strength Die C before break |
134 lb./in. 23.4 n/mm |
137 lb./in. 24 n/mm |
81 lb./in. 14.2 n/mm |
| Uses | Strong, flexible molds | Strong, firm molds | Strong, 0% shrinkage molds |
| Color | Natural tan | Natural tan | Pink |
| MSDS | Here | Here | Here |
