High-Hardness Jewelry Master Mold Resin 3123 for Vulcanized Rubber Molds
Engineered specifically for professional jewelry prototyping and mold-making workflows, our Master Mold Resin delivers exceptional dimensional stability and structural integrity. This high-performance photopolymer 3D printing resin is tailored to withstand the extreme heat and prepressure of the vulcanized rubber molding process, as well as RTV silicone casting.
With an outstanding heat deflection temperature (HDT) of up to 140°C and an ultra-high hardness of 85D, it guarantees zero deformation, crisp filigree retention, and flawless reproduction for your finest master patterns.
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Exceptional High-Temp Resistance
Engineered to endure temperatures up to 160°C. It effortlessly withstands the extreme thermal and physical clamping stresses of the rubber vulcanization process without cracking, softening, or degrading.
Effortless Demolding & Zero Adhesion
Features specialized ceramic-smooth surface properties that prevent the resin pattern from sticking to silicone or rubber molds. This ensures flawless separation and protects delicate mold structures.
High Rigidity & Zero Deformation
An exceptional 85D Shore hardness combined with a high flexural modulus (3000–3800 MPa) prevents thin walls, micro-prongs, and fine jewelry details from distorting under high-pressure mold clamping.
Ultra-High Precision & Crisp Details
With an ultra-low linear shrinkage rate of less than 1%, this resin captures sharp angles, micro-textures, and the incredibly tight tolerances required for intricate industrial and high-end jewelry master models.
Versatile Applications
Vulcanized Rubber Molding
The premier choice for creating heavy-duty master patterns for high-temperature and high-pressure jewelry rubber molds.
High-Temp Engineering
Excellent for industrial components, functional test pieces, and thermal manufacturing jigs that require a strict 140°C limit.
Technical Specifications
| Property | Value | Test Method |
|---|---|---|
| Properties Before Curing | ||
| Color | Orange / Beige | — |
| Viscosity | 200–400 cps @ 25°C | ASTM D1084 |
| Density | 1.08 g/cm³ | ASTM D1875 |
| Flash Point | 110°C | — |
| Properties After Curing | ||
| Hardness | 85D | ASTM D2240 |
| Linear Shrinkage | < 1% | — |
| Flexural Modulus | 3000–3800 MPa | ASTM D790 |
| Heat Deflection Temp. (HDT) | 120–140°C | ASTM D648 |
| Tensile Strength | 60–80 MPa | ASTM D638 |
| Elongation at Break | 8%–10% | ASTM D638 |
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