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Waxing & Mould Making
Wax & Mold-Making Consumables
KYG1608
Castaldo SuperStretch High-Performance High-Elasticity Silicone Jewelry Molding Rubber
Castaldo · SuperStretch
High-elasticity silicone molding rubber for jewelry, offering easy release, low shrinkage, and high tear strength.
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Form Factor: Strip
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KYG1608-STRIP
| Package Weight | 5 lbs (2.27 kg) |
|---|---|
| Form | 3/8” x 2 7/8" x 18” Strip |
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Square
KYG1608-SQUARE
| Package Weight | 20 kg (44 lb) or 5 kg (11 lb) |
|---|---|
| Form | 30 cm x 30 cm x 7 mm Square |
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| Parameter comparisonForm Factor | ||
|---|---|---|
| Package Weight | 5 lbs (2.27 kg) | 20 kg (44 lb) or 5 kg (11 lb) |
| Form | 3/8” x 2 7/8" x 18” Strip | 30 cm x 30 cm x 7 mm Square |
Specifications
| Shore a Hardness | 28 |
|---|---|
| Vulcanization Temperature | 165 – 176°C |
| Rubber Shrinkage | Low, 1.3% |
| Break Elongation | 900% |
| Break Tensile Strength | 7.7 n/mm² |
| Break Tear Strength | 19.2 n/mm² |
| Consistency | Soft and pliable, putty-like |
| Shelf Life (Unvulcanized) | At least one year if properly stored |
| Packing Options | Strips (3/8” x 2 7/8" x 18”, 5 lbs/2.27 kg per box); Squares (30 x 30 x 0.7 cm, 20 kg/44 lb or 5 kg/11 lb packages) |
| Compatibility | Compatible with other Castaldo silicone molding rubbers |
| Typical Uses | Elastic inserts, undercuts, cores & plugs |
Overview
Highlights
- Exceptional elasticity allows easy removal from complicated molds.
- Low 1.3% rubber shrinkage ensures precise, detailed reproductions.
- High shine finish reduces polishing and speeds up mold processing.
Applications
- Jewelry molds with deep undercuts or multi-part requirements.
- Elastic inserts, cores, or spiral plugs for complex mold geometries.
- Pattern reproduction demanding repeated wax withdrawal without mold damage.
Overview
Castaldo SuperStretch High-Performance High-Elasticity Silicone Jewelry Molding Rubber features complex or undercut designs. Its outstanding elasticity and tear strength allow for simple, one-piece molds that can handle intricate patterns—even those that would typically require multi-part molds—enabling effortless removal of wax patterns 100s of times without damage.
Offering a high-shine finish for reduced polishing, SuperStretch makes mold packing and cutting easy, described as cutting 'like butter.' The rubber's low shrinkage rate of just 1.3% ensures accuracy in reproducing fine jewelry details. Compatible with other Castaldo silicone molding rubbers, it can be used alone or as an insert and is supplied in strips or squares to suit different workshop requirements.
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