HONGYE SILICONE’s Strong Mold Making Silicone is a high-strength two-component addition curing liquid silicone, engineered for heavy-duty, long-lasting mold manufacturing. As a national high-tech enterprise with standardized production and one-stop solutions, this mold making silicone is FDA-certified, non-toxic, odorless, featuring exceptional tensile strength, tear resistance, and durability. It caters to global B2B purchasers’ demand for robust mold materials, ensuring repeated use, stable performance, and flexible customization, helping reduce mold replacement costs, improve production efficiency, and gain an edge in the industrial and high-demand mold markets.
Product Overview
Our Strong Mold Making Silicone is a premium high-strength RTV 2 Silicone Rubber, composed of high-purity flowable Part A (base rubber) and Part B (curing agent), adopting advanced addition curing technology. Focused on superior strength, it supports both room-temperature and heat curing with simple operation, achieving shrink-free deep curing without thickness limits and producing no toxic by-products. Unlike ordinary liquid silicone with weak tensile strength, it solves the pain points of easy tearing, deformation, and short service life, making it the trusted choice for global B2B purchasers in industrial, heavy-duty, and high-frequency mold manufacturing.
Technical Specifications
Type: Two-component addition curing strong mold making silicone;
Mix Ratio: 1:1 (by weight, stable for mass production);
Operating Time (25℃): 30~40 minutes (customizable);
Curing Time (25℃): 4~5 hours;
80~120℃ for tens of minutes (accelerated curing);
Temperature Resistance: -60℃~250℃;
Hardness: 25~50 Shore A (adjustable for strength needs);
Tensile Strength: ≥5.0MPa;
Tear Strength: ≥25N/mm;
Shrinkage Rate: ≤0.05% (stable replication);
Elongation at Break: ≥750%;
Certification: FDA, RoHS compliant;
Shelf Life: 10 months (sealed, indoor storage);
Product Images and Videos
High-quality images showcase our Strong Mold Making Silicone, including its uniform liquid texture, high-strength cured texture, and finished heavy-duty molds (industrial components, large cement structures, metal crafts, alloy car accessories), with close-ups of tensile resistance and tear resistance. Demonstration videos display the full molding process—mixing, vacuum degassing, pouring, curing, and demolding—highlighting its superior strength and easy operation. Original image addresses are retained for direct website integration, helping purchasers intuitively assess its durability for heavy-duty production.
Product Features & Advantages
1. Superior Tensile & Tear Strength: Tensile strength ≥5.0MPa and tear strength ≥25N/mm, ensuring strong load-bearing capacity, no easy tearing or deformation, outperforming ordinary liquid silicone and Condensation Curing Silicone Mold Rubber, suitable for heavy-duty industrial use. 2. Advanced Addition Curing: Ensures uniform, shrink-free deep curing without thickness limits, no toxic by-products, and stable mechanical properties, meeting global industrial strength standards.
3. Safe & Compliant: FDA-certified, non-toxic, odorless, suitable for Food grade mold silicone and high-demand industrial scenarios requiring safety and durability. 4. Excellent Durability: Supports 100~120 mold cycles, 30% longer service life than ordinary Mold Silicone , reducing replacement costs and improving production efficiency.
5. Easy Operation & Flexibility: 1:1 weight ratio for simple mixing, dual curing options; hardness, operating time, and curing time can be customized to match diverse heavy-duty mold needs.
6. Strict Quality Control: Multi-layer inspection from Silicone raw materials to finished products, ensuring each batch maintains high strength and stable performance for global supply.
How to Use (Step-by-Step for Strong Mold Making)
1. Mix Part A and Part B of Strong Mold Making Silicone in a 1:1 weight ratio, stirring thoroughly for 2~3 minutes in an irregular direction until uniform and bubble-free—ensuring consistent strength after curing.
2. Perform vacuum degassing for 2~5 minutes; adjust time based on viscosity, weight, and vacuum intensity to eliminate bubbles and ensure mold integrity.
3. Pour the degassed silicone into the mold master, leveraging its good fluidity to fill all details and form a strong structure.
4. Cure at room temperature (25℃) for 4~5 hours, or 80~120℃ for accelerated curing to retain superior strength.
5. Store unused silicone in sealed packaging, indoor storage away from sunlight and rain, and use within 10 months to maintain its high-strength properties. Avoid adding excessive silicone oil, which may reduce tensile strength.
Application Scenarios
Our Strong Mold Making Silicone is widely used in global heavy-duty mold manufacturing, including industrial mold silicone rubber, large cement components, cultural stone, concrete molds, metal crafts, alloy car accessories, and high-frequency replication molds. It brings tangible value: reducing mold replacement costs by 45%+, improving production efficiency, ensuring stable performance in heavy-duty scenarios, and supporting customized strength solutions, helping B2B purchasers reduce costs and enhance competitiveness in the strong mold silicone market.
FAQ
1. What makes this silicone “strong” for mold making?
Its high tensile strength (≥5.0MPa) and tear strength (≥25N/mm) ensure durability, distinguishing it from ordinary mold silicone with weak load-bearing capacity.
2. Is it suitable for heavy-duty industrial molds?
Yes, its superior strength and durability make it ideal for large components, high-frequency replication, and heavy-load mold scenarios.
3. Can we customize its hardness for different strength needs?
Yes, hardness can be adjusted to 25~50 Shore A to match your specific heavy-duty mold requirements.
4. What is the service life of molds made with this silicone?
It supports 100~120 mold cycles, 30% longer than ordinary mold silicone.
5. Will excessive silicone oil affect its strength?
Yes, adding too much silicone oil will damage the molecular structure and reduce tensile strength, so we recommend following the standard mixing ratio.
Shenzhen Hong Ye Jie Technology Co., Ltd
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