HONGYE SILICONE’s Heat Resistant Molding Silicone Rubber is a premium dual-component Addition Curing Silicone, specialized for high-temperature casting mold manufacturing. As a national high-tech enterprise with standardized production and one-stop solutions, this heat-resistant silicone is FDA and RoHS certified, non-toxic, odorless, and easy to operate, featuring exceptional high-temperature resistance (-60℃~250℃), stable performance under extreme heat, and good fluidity. It caters to global B2B purchasers (industrial manufacturers, mold suppliers, high-temperature casting makers) seeking heat-stable molding materials, supporting high-temperature casting scenarios, flexible customization, and mass production, helping avoid mold deformation and improve production stability.
Product Overview
Our Heat Resistant Molding Silicone Rubber is a high-performance RTV 2 Silicone Rubber, composed of high-purity flowable Part A (base rubber) and Part B (curing agent), adopting advanced addition curing technology with heat-resistant formula optimization. It supports both room-temperature and heat curing with simple operation, achieving shrink-free deep curing without thickness limits, producing no toxic by-products, and boasting excellent thermal stability—solving the pain point of mold deformation, aging, or cracking under high temperatures that plagues ordinary Mold Making Silicone. Unlike condensation curing silicone mold rubber with poor heat resistance, it maintains stable mechanical properties even at 250℃ for long-term use, with short-term heat resistance up to 350℃ for 2 hours, making it the trusted choice for global B2B purchasers in high-temperature casting fields.
Product Images and Videos
High-quality images showcase our Heat Resistant Molding Silicone Rubber, including its uniform liquid texture, cured heat-resistant elastic molds, and finished products after high-temperature casting (metal crafts, high-temperature resin parts, industrial components). Close-ups highlight its thermal stability, no deformation or cracking under high temperatures, and good detail replication. Demonstration videos display the full molding process—mixing, vacuum degassing, pouring, curing, and high-temperature resistance tests—highlighting its stable performance in extreme heat. Original image addresses are retained for direct website integration, helping purchasers intuitively assess its suitability for high-temperature molding needs.
Product Features & Advantages
1. Superior Heat Resistance: Optimized heat-resistant formula ensures long-term use at -60℃~250℃ and short-term resistance up to 350℃, maintaining stable performance without deformation, aging, or cracking, far superior to ordinary mold silicone and condensation curing silicone mold rubber.
2. Stable Thermal Performance: Excellent thermal stability, no performance degradation after long-term high-temperature exposure, with good ozone resistance and anti-chemical erosion, suitable for harsh high-temperature casting environments.
3. Food-Grade Safety: FDA and RoHS certified, non-toxic, odorless, no harmful by-products, suitable for high-temperature food-contact casting and high-standard industrial scenarios.
4. Easy Operation & Versatility: 1:1 mix ratio, simple stirring, good fluidity for easy pouring and detail replication; compatible with high-temperature epoxy resin, polyester resin, and metal casting.
5. Customizable Performance: Hardness, operating time, and curing time can be tailored to different high-temperature casting needs without compromising heat resistance.
6. Long Service Life: High tensile/tear strength, supporting 95~115 mold cycles even under high temperatures, reducing mold replacement costs for purchasers.
How to Use (Step-by-Step for High-Temperature Molding)
1. Mix Part A and Part B of the heat resistant molding silicone rubber in a 1:1 weight ratio, stirring thoroughly for 2~3 minutes in an irregular direction until uniform and bubble-free, ensuring full integration to maintain heat resistance.
2. Perform vacuum degassing for 2~5 minutes; adjust time based on viscosity to eliminate bubbles, which can cause uneven curing and reduce heat resistance.
3. Pour the degassed silicone into mold masters, leveraging good fluidity to fill all details and gaps, ensuring uniform thickness for consistent thermal stability.
4. Cure at room temperature (25℃) for 4~5 hours, or 80~120℃ for accelerated curing; for high-temperature casting scenarios, post-cure the mold at 150℃ for 1 hour to enhance heat resistance.
5. Store unused silicone in sealed packaging, indoor storage away from sunlight and rain, use within 10 months; avoid high-temperature storage to prevent premature curing.
Application Scenarios
Our Heat Resistant Molding Silicone Rubber is widely used in global high-temperature casting mold manufacturing, including high-temperature resin casting, metal crafts, alloy car accessories, industrial high-temperature components, epoxy resin/polyester resin high-temperature molding, and precision handboard models for high-temperature testing. It also has potential applications in electrical insulation scenarios similar to silicon rubber insulators, thanks to its excellent thermal stability and insulation performance. It brings tangible value: reducing high-temperature-related mold defects by 40%+, improving production stability by 35%, avoiding rework costs from mold deformation, and supporting mass high-temperature production, helping B2B purchasers gain an edge in high-temperature casting markets.
FAQ
1. What is the heat resistance range of this silicone rubber?
It supports long-term use at -60℃~250℃ and short-term use up to 350℃ for 2 hours, meeting most high-temperature casting needs.
2. Can it maintain performance under long-term high-temperature exposure?
Yes, it has excellent thermal stability, with no deformation or aging after 1000 hours at 200℃.
3. Is it suitable for food-contact high-temperature casting?
Yes, it’s FDA certified, non-toxic, odorless, fully compliant with food-grade standards.
4. How to enhance its heat resistance further?
Post-cure the mold at 150℃ for 1 hour after normal curing to maximize thermal stability.
5. Does high-temperature curing affect its service life?
No, its optimized formula ensures stable performance even with high-temperature curing, supporting 95~115 mold cycles.
Shenzhen Hong Ye Jie Technology Co., Ltd
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