High Quality Casting Silicone Rubber for Mold Making

HONG YE SILICONE Casting Silicone Rubber is a premium two-component RTV 2 Silicone Rubber, core Mold Making Silicone with adjustable hardness (15-40 Shore A). As liquid silicone , it boasts good fluidity, excellent tensile/tear strength, low shrinkage, and high temperature resistance. Suitable for pouring molding, it supports repeated use and multiple duplications. Widely applied in resin crafts, gypsum decoration, furniture, and toy molding, it offers flexible curing options, stable performance, and global certification compliance, helping B2B buyers reduce costs, improve production efficiency, and ensure product consistency.

 

This professional Industrial mold silicone rubber is engineered for high-precision casting scenarios, available in Addition Curing Silicone (platinum-based) and Condensation Curing Silicone Mold Rubber formulations. As a flowable liquid silicone, it features deformation resistance, low shrinkage, and excellent flexibility, solving core pain points like mold damage, dimensional deviation, and difficult demolding in casting production. Designed for diverse manufacturing needs, it balances operability and durability, making it a reliable choice for global crafts, building materials, toy, and furniture manufacturers.

 

Product Type: RTV 2 Silicone Rubber, Addition Curing Silicone, Condensation Curing Silicone Mold Rubber; Form: Two-component liquid silicone; Hardness Range: 15-40 Shore A (customizable); Curing Time: 2-3 hours (room temperature); Shrinkage Rate: Low; Key Performance: High tensile strength, tear strength, cut-growth resistance; Heat Resistance: High; Curing Agent Options: Multiple types (matches different operation/curing time needs); Shelf Life: 12 months (stored ≤25℃ in sealed original packages, dry & cool place); Packaging: 1kg/jar, 5kg/20kg/25kg/200kg drum, vacuum packing available; Transport: Non-dangerous goods (general chemicals); Application Method: Pouring molding.

 

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Adjustable hardness (15-40 Shore A) fits diverse casting materials (resin, gypsum, cement, etc.). Good fluidity and operability simplify pouring, ensuring full coverage of intricate details. Excellent mechanical properties (high tensile/tear strength) extend mold service life, supporting repeated use and multiple duplications. Low shrinkage and deformation resistance guarantee dimensional stability and precise replication. High temperature resistance adapts to harsh production environments. Multiple curing agent options meet different operation/curing time requirements. Compared to ordinary silicone, it has better cut-growth resistance and durability, reducing mold replacement costs.

 

Step 1: Process and clean the master model thoroughly (ensure dry and free of impurities) to avoid affecting mold quality.

Step 2: Take an appropriate amount of liquid silicone (Part A) and add matching curing agent (Part B) in the specified ratio.

Step 3: Stir the mixture evenly to ensure consistent curing and avoid lumps.

Step 4: Perform vacuum defoaming for 2-3 minutes (optional but recommended) to remove trapped air.

Step 5: Pour the bubble-free mixture into the pre-prepared mold frame, ensuring full coverage of the master model.

Step 6: Allow room-temperature curing for 2-3 hours, avoid external disturbance during curing.

Step 7: Demold gently after full curing; the mold is ready for casting production.

 

Widely used for resin crafts (poly resin, PU resin, unsaturated resin), gypsum/cement/concrete decorations, lighting ornaments, candle crafts, plastic toys, stationery gifts, Buddha statues/reliefs, furniture/decorative materials, large cement molds, artificial fossils, European-style components, simulation landscapes, animal/plant sculptures, sandstone crafts, model design, and product development. It helps buyers improve casting precision, shorten production cycles, reduce defect rates, and lower long-term procurement costs.

 

The product holds ISO 9001 quality management system certification and CE certification. The platinum-based addition curing silicone variant meets FDA standards (Food grade mold silicone, applicable for food-contact crafts). It complies with international industrial silicone norms and general chemical transport standards, ensuring smooth global B2B procurement and customs clearance.

 

We offer OEM customization services, including adjustable hardness (15-40 Shore A), viscosity, curing speed, and packaging specifications. We also optimize formulas for enhanced heat resistance or specific material compatibility (e.g., resin, gypsum), catering to Rapid prototyping silicone needs and large-scale casting production.

 

 

Manufactured with high-purity Silicone raw materials, the product undergoes precise formula blending, closed vacuum mixing, multi-index performance testing (hardness, tensile strength, shrinkage), and standardized filling. Each batch is strictly inspected before shipment, supported by mature production lines and professional quality control teams, ensuring stable performance for bulk orders.

 

1. What is the shelf life of this silicone?

12 months when stored ≤25℃ in sealed original packages in a dry, cool place.

2. Can it be used for toy mold making?

Yes, it’s suitable for plastic toy molding, with low shrinkage and safe performance.

3. How to adjust curing speed?

Choose matching curing agents; consult our team for specific ratio adjustments.

4. Is it safe for transportation?

Yes, it’s a non-dangerous good and can be transported as general chemicals.

5. How many times can the mold be reused?

With high tear strength, it supports 200-500 duplications under proper use and maintenance.