High Quality Pourable Silicone for Casting Molding

HONG YE SILICONE Pouring Molding Pourable Silicone Rubber is a two-component RTV 2 Silicone Rubber, supplied as Condensation Curing Silicone Mold Rubber (tin-cure) and Platinum cured mold silicone. As low-viscosity liquid silicone and professional Mold Making Silicone, it cures at 25℃ in 3–6 hours or with heating, with 20–40 Shore A adjustable hardness. It features high tensile/tear strength, great fluidity and easy demolding, ideal for crafts, statues, architectural decoration and GRC molding, supporting high-cycle replication and stable industrial production.

 

This Industrial mold silicone rubber is a two-part pourable liquid silicone, designed for efficient pouring molding. It includes tin-cured condensation curing silicone mold rubber and platinum-cured Addition Curing Silicone, both forming flexible, high-strength molds after room-temperature or heat curing. With low viscosity for smooth flow and bubble removal, it perfectly captures details of artworks, sculptures and decorative components, solving common issues like incomplete filling, mold deformation and short service life in pouring production.

 

Product Type: RTV 2 Silicone Rubber, pourable Liquid Mold Silicone , mold making silicone; Form: Two-part liquid (Part A base, Part B catalyst); Mix Ratios: Tin cure 100:3, platinum cure 1:1 / 10:1; Curing Condition: 25℃ room-temperature (3–6h) or heat-assisted; Hardness Range: 20–40 Shore A; Key Traits: Low viscosity, high tear/tensile strength, heat-resistant; Shelf Life: 12 months (≤25℃, sealed dry & cool packages); Packaging: 1kg/jar, 5kg/20kg/25kg/200kg drum, vacuum packing available.

 

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High duplication cycles and zero deformation maintain long-term dimensional stability. Outstanding tear and tensile strength extend mold lifespan for mass production. Low viscosity ensures excellent fluidity, full mold filling and easy de-airing for simple pattern components. Superior flexibility enables damage-free demolding and reduces product reject rate. Reliable high temperature resistance adapts to various casting material exothermic reactions. 20–40 Shore A hardness can be matched to product size and detail complexity, outperforming general silicone in pouring adaptability and durability.

 

Step 1: Prepare and clean the master model thoroughly. Weigh base silicone and catalyst at the specified ratio (tin cure 100:3, platinum cure 1:1/10:1), then mix completely to avoid partial solidification.

Step 2: Perform vacuum pumping within 10 minutes to eliminate bubbles, preventing premature cross-linking failure.

Step 3: Adopt direct pouring casting for simple-pattern products, leveraging low viscosity for smooth flow and efficient defoaming.

Step 4: Allow full curing at room temperature; demold after completion, and use the mold for batch casting once fully stabilized.

 

Widely used for terracotta arts, resin crafts, Buddhist statues, ceramic sculptures, construction decorations, ornamental plaster, garden sculptures, fiberglass animal models, GRC and polyurethane art replication. It supports precise detail copying, simplifies operation for large-scale small & medium decorative parts, reduces mold replacement frequency and labor input, helping manufacturers improve production efficiency and lower per-unit molding cost.

 

This series conforms to ISO 9001 quality management system and CE industrial standards. Platinum cured Mold Silicone adopts eco-friendly formula, meeting international chemical import and usage regulations for global B2B bulk procurement and cross-border transportation.

 

We provide hardness tuning (20–40 Shore A), viscosity adjustment, catalyst curing speed optimization and packaging customization. Formula modification is available for special large-size or high-detail components, compatible with both Rapid prototyping silicone trials and industrial mass production lines.

 

Made with high-purity Silicone raw materials, the product goes through precise proportioning, closed vacuum mixing, physical performance testing (tear strength, viscosity, hardness) and standardized filling. Each batch passes pre-delivery inspection, with stable production lines guaranteeing consistent quality and on-time supply for large orders.

 

1. Which curing system should I choose?

Tin-cure condensation curing silicone mold rubber offers cost efficiency for general crafts; platinum cured mold silicone suits high-performance and eco-friendly production demands.

2. How to select hardness for different sizes?

20–25 Shore A for small intricate pieces, 35–40 Shore A for large simple molds, with intermediate grades for medium-sized products.

3. How to adjust curing speed?

Increase temperature/humidity or catalyst dosage for faster curing; reduce them for longer operating time.

4. What is the vacuum pumping limit?

The step must be finished within 10 minutes to avoid abnormal cross-linking and scrapping of the silicone mixture.

5. How to store unused silicone?

Keep in original sealed packages at ≤25℃ in dry, cool conditions, with a 12-month valid shelf life.