HONGYE SILICONE’s Strong Silicone For Long Lasting Molds is a professional two-component addition-curing silicone, engineered with exceptional tensile and tear strength to extend mold service life. As a national high-tech enterprise with standardized production and one-stop solutions, this strong silicone is FDA-certified, non-toxic, odorless, temperature-resistant (-60℃~250℃), featuring excellent durability, stable performance and easy operation. It helps global mold manufacturers reduce mold replacement costs, improve production efficiency, and gain competitiveness in long-term mold application scenarios.
Product Overview
Our Strong Silicone For Long Lasting Molds is a high-performance liquid silicone tailored for the rigorous durability requirements of long-service-life mold making. Composed of high-purity flowable Part A and Part B, this RTV 2 Silicone Rubber adopts advanced addition curing technology, which enhances its tensile and tear resistance compared to traditional options. It achieves shrink-free deep curing without thickness limits, produces no toxic by-products, and stands out for its exceptional strength and long-lasting performance—making it the ideal choice for crafting durable molds that withstand frequent use in industrial, craft and prototyping fields.
Technical Specifications
Type: Two-component addition-curing RTV 2 Silicone Rubber; Mix Ratio: 1:1 (by weight); 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: 22~30 Shore A (high-strength grade, customizable); Shelf Life: 10 months (sealed, indoor storage); Fluidity: 700~1100 mPa·s; Tensile Strength: ≥4.2MPa; Tear Strength: ≥18N/mm; Shrinkage Rate: ≤0.08%; Certification: FDA food-grade certified; Application: Strong silicone for long lasting molds, Mold Making Silicone, liquid silicone, Addition Curing Silicone, Industrial mold silicone rubber, Rapid prototyping silicone.
Product Images and Videos
High-quality images showcase the silicone’s high-strength texture, excellent fluidity, smooth mold filling details, and finished molds with strong durability after repeated use. Demonstration videos display the full mold making workflow: component mixing, vacuum degassing, pouring, curing, and demolding, highlighting its tensile/tear resistance, long service life and easy operability. Original image addresses are retained for direct website integration, helping purchasers intuitively recognize its strength and durability advantages.
Product Features & Advantages
1. Exceptional Strength & Durability: High tensile strength (≥4.2MPa) and tear strength (≥18N/mm), combined with excellent耐老化 performance, supporting 80~100 mold cycles—far more durable than ordinary mold making silicone and Condensation Curing Silicone Mold Rubber, greatly extending mold service life. 2. Advanced Addition Curing Technology: No by-products or odor during curing, clean and eco-friendly, meeting global mold quality standards, and the curing process enhances the silicone’s structural strength for long-term use. 3. Stable Long-Term Performance: Resists wear, deformation and aging even after frequent use, maintaining consistent performance, which is crucial for long-lasting molds. 4. Easy Operation & Versatility: 1:1 weight ratio for simple mixing, dual curing options, excellent fluidity for easy pouring; FDA-certified, non-toxic, compatible with resin, metal, concrete, fitting diverse mold scenarios. 5. Brand Assurance: National high-tech enterprise with standardized production, strict quality control ensures each batch has consistent strength, providing one-stop solutions and technical support for long-lasting mold needs.
How to Use (Step-by-Step)
1. Mix Part A and Part B of the strong silicone in a 1:1 weight ratio, stirring thoroughly for 2~3 minutes until uniform and bubble-free—critical for ensuring the silicone’s full strength and durability.
2. Vacuum degas the mixed silicone for 2~5 minutes; adjust time according to viscosity, weight and vacuum pressure to eliminate bubbles that affect structural strength.
3. Slowly pour the degassed silicone into the master mold, leveraging its excellent fluidity to fully cover all cavities and details.
4. Cure at room temperature (4~5 hours) or heat at 80~120℃ for accelerated curing, ensuring the silicone forms a high-strength elastic body for long-lasting use.
5. Gently demold the cured mold, clean thoroughly before reuse; store unused silicone sealed indoors, away from sunlight and rain to preserve its strength and durability.
Application Scenarios
This strong silicone is widely used in long-lasting mold scenarios, including industrial Mold Silicone rubber production, high-frequency use metal craft molds, alloy auto parts molds, large concrete/cultural stone molds, high-precision rapid prototyping silicone molds, and epoxy resin batch casting molds. It brings tangible value: extending mold service life by 60%+, reducing replacement costs by 40%+, reducing production downtime, and helping manufacturers deliver long-lasting, high-quality molds for global clients.
FAQ
1. What makes this silicone "strong" for long lasting molds? It has high tensile (≥4.2MPa) and tear strength (≥18N/mm), combined with excellent performance, supporting 80~100 mold cycles for long-term use.
2. Is it suitable for food-grade long lasting molds? Yes, it’s FDA-certified, non-toxic and odorless, fully meeting food-contact safety standards for repeated use.
3. Will it lose strength after long-term storage? No, sealed indoor storage ensures its strength remains stable for 10 months, suitable for long-term inventory and use.
4. Can we customize its strength for specific mold needs? Yes, hardness and strength can be tailored to fit different mold usage frequencies and durability requirements.
5. How to maintain its long-lasting performance? Follow the correct operation steps, avoid extreme temperatures and harsh environments, and clean and store properly after use.
Shenzhen Hong Ye Jie Technology Co., Ltd
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