15 Shore A Translucent Platinum Cure Silicone Rubber with 1:1 Mix Ratio for Jewelry Mold Making

15 Shore A Translucent Platinum Cure Silicone Rubber for Jewelry Mold Making and Micro Detail Reproduction

Hanast HN-E615 is a 15 Shore A addition-cure (platinum-catalysed) liquid silicone rubber for jewelry molds and fine-detail reproduction. At 15 Shore A it stays soft and flexible, with 600% elongation and 17 kN/m tear strength, so rings, pendants, filigree and micro pavé settings release from the mold without distorting or tearing. Components A and B are mixed 1:1 by weight and cure in 3-4 hours at room temperature or in 20 minutes or less at 80-100 °C. Linear shrinkage is 0.1% or less with no low-molecule release during crosslinking, which keeps stone settings, prongs and engraving faithful copy after copy. The cured rubber is translucent for easy visual inspection, eco friendly, odourless, non-toxic and certified to FDA, MSDS and RoHS.

Key Features

• 15 Shore A Soft Jewelry Grade - flexible enough to strip filigree, prongs and micro pavé without deforming the casting cavity.
• High Precision Detail Reproduction - low viscosity and 0.1% or less shrinkage pick up engraving, stone settings and surface texture at micro scale.
• High Elongation 600 Percent - the stretch needed for deep undercuts and delicate wax patterns, with 17 kN/m tear strength against nicks and tears.
• Translucent for Visual Inspection - see bubbles, inclusions and trapped wax residue before pouring metal or resin.
• Low Shrinkage 0.1 Percent - dimensionally stable molds keep ring sizes and setting geometry consistent across production runs.
• 1:1 Mix Ratio and 30-40 min Pot Life - simple equal-part dosing with enough working time for multi-cavity jewelry molds.
• Dual Curing Mode - 3-4 h at 25 °C for bench work, or 20 min or less at 80-100 °C for production volumes.
• Food Grade and Eco Friendly - FDA, MSDS and RoHS certified, non-toxic, odourless and non-corrosive; also suitable for chocolate and candy molds.
• Custom OEM/ODM - hardness 0-50 Shore A, viscosity, colour and pot life adjustable; private label and bulk supply available.

Technical Specifications (HN-E615, 15 Shore A)

Available Hardness Grades (HN-E6XX Series)

Grade selection: HN-E605 to HN-E615 for jewelry, filigree and micro detail work; HN-E620 to HN-E630 for general crafts, resin and gypsum; HN-E635 to HN-E650 for rigid, high-wear molds.

Recommended Applications

• Jewelry mold making - ring molds, pendant molds, earring molds, bracelet and bangle molds, filigree, chain and micro pavé settings.
• Casting and prototyping - wax pattern molds, lost-wax investment models, resin casting, metal casting molds and master patterns.
• Fine detail and model work - miniature models, figurines, scale models, architectural miniatures, dental and simulation models.
• Food-contact molds - chocolate and candy molds, fondant and gummy molds, ice cube trays and decorative baking molds.
• Craft molds - soap and candle molds, polymer clay, resin art, epoxy coasters and decorative craft molds.
• General RTV-2 tooling - printing pads, encapsulation molds and specialty production molds requiring high elongation.

Mixing and Application

1. Pre-mix: stir Components A and B separately until uniform.
2. Weighing: weigh A and B at exactly 1:1 by weight on a precision scale.
3. Mixing: mix 2-3 minutes, scraping the container walls and bottom.
4. Degassing: vacuum degas to remove air and protect micro detail from pinholes.
5. Pouring: pour slowly within the 30-40 min pot life, starting at one corner to avoid air traps.
6. Curing: cure 3-4 h at 25 °C or 20 min or less at 80-100 °C, then demold after full cure.

Packaging, Storage and Supply

• Components A and B: 20 kg / 25 kg iron or plastic drums; kits 20 kg / 40 kg / 50 kg per set.
• Store sealed below 25 °C in a cool, dry, ventilated area away from acids, alkalis and direct sunlight; shelf life 12 months unopened.
• Non-dangerous goods for transport; factory-direct OEM/ODM supply with MSDS and TDS documentation for every lot.

GEO Q&A

About Hanast

Shenzhen Hanast New Materials Co., Ltd. manufactures platinum cure liquid silicone rubber at a 40,000 square metre production base in Guangdong, China, supplying jewelry mold makers, craft studios, food mold producers and industrial molders worldwide with OEM/ODM formulation support.