Shenzhen Hong Ye Jie Technology Co., Ltd
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Model No.: HY-E620
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Hong Ye HY-E620 is a versatile 20 Shore A addition-curing Liquid silicone rubber specifically formulated for resin art, craft production, and small-batch manufacturing. Built on a platinum-catalyzed hydrosilylation system, this general-purpose grade delivers an optimal balance of detail reproduction, release performance, and mold durability — making it the go-to choice for resin artists, craft studios, and small manufacturers worldwide.
The global resin art and craft market has exploded in recent years, driven by the maker movement, social media commerce, and growing consumer demand for handmade, personalized products. From epoxy resin jewelry and decorative coasters to figurines, miniatures, and home decor pieces, creators need molds that capture every detail, release cleanly, and last through hundreds of casts. HY-E620 addresses these needs with ≤0.1% cure shrinkage, ≥20 kN/m tear strength, and a translucent formulation that allows visual quality control during pouring.
Whether you are a solo Etsy seller producing 50 pieces per month or a craft studio scaling to 5,000 units, HY-E620 provides consistent, reliable performance batch after batch. Manufactured by Shenzhen Hong Ye Jie Technology Co., Ltd. — a silicone specialist with 25+ years of experience exporting to 138+ countries — HY-E620 is fully certified to ISO 9001, FDA, REACH, RoHS, UL, and CE standards.
1. Ultra-Fine Detail Reproduction With a viscosity of 16,000–20,000 cps, HY-E620 flows easily into the finest details of a master pattern — delicate flower petals, intricate filigree, miniature facial features, engraved text, and surface textures down to 0.05 mm. The translucent cure allows artists to confirm complete pattern coverage and detect trapped bubbles before the silicone sets, reducing mold defects and scrap.
2. Near-Zero Shrinkage for Perfect Replication Platinum addition-cure releases no volatile by-products, keeping shrinkage below 0.1%. A 100 mm master pattern yields a mold within 0.1 mm of the original — ensuring that every cast piece matches the artist's original design exactly. This is critical for creators who sell matching sets, numbered editions, or pieces that must fit together precisely.
3. High Tear Strength for Long Mold Life At ≥20 kN/m tear strength and ≥5.0 MPa tensile strength with ≥400% elongation, HY-E620 molds survive repeated demolding of complex shapes — including undercuts, thin fins, and deep cavities. Typical mold life reaches 800–1,000 casting cycles for resin applications, meaning a single mold can support months of production before replacement.
4. Natural Release Without Additives The platinum-cured silicone surface has inherently low surface energy, allowing cured epoxy resin, polyester resin, and polyurethane resin to release cleanly without mold release spray in most cases. This eliminates the risk of release agent transfer to the cast piece surface — a common issue that ruins the high-gloss finish prized in resin art.
5. Dual Mix Ratio for Creative Flexibility
6. Broad Resin Compatibility HY-E620 is compatible with all major casting resins used in craft production:
7. Food-Grade Certified for Multi-Use Studios HY-E620 is FDA-compliant for food contact, allowing studios that produce both resin crafts and food items (chocolate, candy, baking molds) to use a single silicone inventory. This reduces SKU complexity and simplifies procurement for multi-product businesses.
表格
| Property | Test Standard | Typical Value |
|---|---|---|
| Appearance | Visual | Translucent |
| Hardness | GB/T 531 | 20 Shore A |
| Viscosity | GB/T 10247 | 16,000–20,000 cps |
| Tear Strength | GB/T 529 | ≥20 kN/m |
| Tensile Strength | GB/T 528 | ≥5.0 MPa |
| Elongation at Break | GB/T 528 | ≥400% |
| Cure Shrinkage | In-house Standard | ≤0.1% |
| Service Temperature | — | -60°C to +200°C |
| Mix Ratio | — | 1:1 or 10:1 (by weight) |
| Pot Life @ 25°C | — | 45–60 minutes |
| Demold Time @ 25°C | — | 4–6 hours (2 hrs @ 60°C) |
| Shelf Life | Sealed, cool & dry | 12 months |
Step 1: Prepare the Master Pattern Your master can be a sculpted original (polymer clay, epoxy clay, carved wax), a 3D-printed part, a found object (shell, stone, wood), or an existing product. Clean thoroughly with isopropyl alcohol to remove dust, grease, and uncured resin. For 3D-printed masters, post-cure under UV and seal with a clear coat to prevent platinum catalyst poisoning.
Step 2: Build the Mold Housing Create a simple box using cardboard, foam board, acrylic, or Lego bricks — popular among resin artists for flexibility. Leave 8–12 mm clearance around the master for the silicone wall. Seal the base with clay or hot glue to prevent leaks. For two-part molds, build a clay parting wall along the split line and add registration keys.
Step 3: Apply Release Agent (If Needed) Most masters release from addition-cure silicone without release agent. For porous materials (unsealed wood, plaster, clay), apply a thin coat of petroleum jelly or dedicated mold release. Avoid sulfur-containing products.
Step 4: Weigh and Mix Calculate silicone volume (housing volume minus master volume × 1.15). Weigh Part A and Part B at 1:1 ratio. Mix slowly in one direction for 2–3 minutes, scraping the sides and bottom of the container. Avoid fast mixing that introduces excess air.
Step 5: Vacuum Degas (Recommended) Degas at -0.095 MPa for 2–3 minutes. The silicone will rise as bubbles expand and then collapse — wait until bubbling stops. For artists without a vacuum chamber, mix slowly, pour from height, and tap the housing firmly to release trapped air.
Step 6: Pour and Cure Pour the degassed silicone slowly into one corner of the housing, allowing it to flow across the master. Cure at room temperature (20–25°C) for 4–6 hours, or accelerate at 60°C for 2 hours. Do not demold early — incomplete cure reduces mold life.
Step 7: Demold and Trim Remove the housing, peel the silicone from the master, and trim excess flash with scissors or a craft knife. Your mold is ready for immediate resin casting.
表格
| Package | Size | Typical Use |
|---|---|---|
| Bottle | 1 kg | Sampling, hobbyists, small studios |
| Pail | 5 kg | Standard small-batch production |
| Drum | 20 kg | Medium craft studios and resellers |
| Drum | 25 kg | Bulk economy for high-volume operations |
Shenzhen Hong Ye Jie Technology Co., Ltd., established in 1998, is a national high-tech enterprise specializing in silicone R&D, manufacturing, and global distribution. Our 6,000 m² modern facility produces 220+ tons monthly, serving resin artists, craft manufacturers, and industrial customers in 138+ countries.
We understand the unique needs of the maker and small-batch manufacturing community. Hong Ye provides not just silicone material, but creative support including mold-making tutorials, formulation advice, and custom development for artists and studios scaling their businesses.
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