Castaldo · SuperStretch
Castaldo SuperStretch High-Performance High-Elasticity Silicone Jewelry Molding Rubber
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Waxing & Mould Making
Wax & Mold-Making Consumables
KYG1611
Castaldo Rapido Silicone Jewelry Molding Rubber
Castaldo · Rapido
Ultra-fast curing silicone rubber for jewelry molds with high strength and minimal shrinkage.
Waxing & Mould Making
Specifications
| Vulcanization Temperature | 93 °C (200°F) |
|---|---|
| Shore a Hardness | 38-40 |
| Rubber Shrinkage | 0.1% |
| Break Elongation | 614% |
| Break Tensile Strength | 8.9 N/mm² |
| Break Tear Strength | 18.2 N/mm² |
| Consistency | Soft, clay-like |
| Surface Finish | Extra shiny; requires less finishing |
| Mold Packing Sizes | Strips 45.7 cm x 7.3 cm x ~6 mm (18" x 2 7/8" x ~3/8"), 2.27 kg box |
| Release Agent Needed | None – self-releasing waxes |
Overview
Highlights
- Cures up to three times faster than standard molding rubbers.
- Produces strong, highly detailed molds with only 0.1% shrinkage.
- Soft, pliable and easy to cut, reducing hand fatigue.
Applications
- Fast production of jewelry master molds for wax injection.
- Detailed mold making for complex jewelry patterns.
- General purpose silicone mold making in jewelry workshops.
Overview
Castaldo Rapido Silicone Jewelry Molding Rubber is designed for rapid jewelry mold production, offering curing times up to three times faster than standard silicone rubbers. With vulcanization at 93°C (200°F), Rapido forms robust, highly detailed molds in as little as 10–20 minutes, depending on mold size. Its low 0.1% shrinkage ensures excellent precision and fit for wax injections.
This rubber is soft, pliable, and easy to handle—ideal for both simple and complex mold shapes. The self-releasing molds create shiny wax surfaces with less finishing required and cut easily with minimal hand fatigue. All standard tools and packing techniques for other Castaldo rubbers apply, requiring no changes in workflow.
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