In fields such as RTV silicone rubber, electronic sealing, and textile smoothing agents, there is an "invisible hero" material — high molecular weight hydroxyl-terminated raw rubber (IOTA 107GUM). Relying on its million-grade molecular weight and super adaptability, it has become the "core cornerstone" for production in multiple industries, enabling various high-performance products to move from design to reality.  

In terms of appearance, it is a colorless and transparent semi-solid, resembling a fine-textured transparent soft gel, free of impurities and off-colors. Whether mixed with other materials or processed independently, it can maintain a pure texture without causing appearance defects to the finished product. Its key performance parameters are even more "solid": the purity is as high as over 99%, meaning it contains almost no excess impurities, which can maximize the performance stability of subsequent products and reduce quality issues caused by impurities; the molecular weight ranges from 400,000 to 1,000,000, making it a typical "high molecular weight" material — simply put, it has longer molecular chains and a more stable structure, endowing it with excellent mechanical properties and processing adaptability. It can not only cooperate with other raw materials but also independently undertake core functions; the volatile content is less than 3%, so during high-temperature processing or long-term use, there is almost no loss or harmful substances generated due to volatilization, ensuring production safety and the durability of finished products.  

Its core advantages lie in the dual characteristics of "hydroxyl termination" and "high molecular weight". Hydroxyl groups are like the "connecting hands" of the material, which can easily react with other substances, making it a "key raw material" in the production of RTV silicone rubber and pressure-sensitive adhesives. For example, when manufacturing RTV silicone rubber, it can efficiently combine with cross-linking agents to form rubber products with good elasticity and high strength; while the high molecular weight endows it with excellent insulation, heat resistance, and flexibility. When used in the electronic field, it can be used as a potting and sealing material, putting a "protective coat" on radios, electronic instruments, and semiconductor components. It not only isolates moisture and prevents short circuits but also buffers vibrations and resists high temperatures, allowing electronic components to work stably in complex environments.  

In practical applications, its "presence" can be seen across multiple industries. The automotive and machinery industries use it to make rubber rollers; relying on its good elasticity and wear resistance, the rollers operate more smoothly and have a longer service life; the textile industry uses it as a smoothing agent for wool and cashmere; with only a small amount added, it can make wool and cashmere fabrics feel soft and smooth, eliminating roughness; the construction industry uses it to produce joint sealing materials, which can tightly fill gaps, providing both waterproofing and anti-aging effects, keeping building gaps sealed for a long time; even in the production of two-component silicone rubber molds, it can exert excellent release properties, allowing precise molds and impression materials to be easily separated, ensuring clear mold patterns and smooth surfaces.  

For enterprises in need of high-quality basic materials, this high molecular weight hydroxyl-terminated raw rubber is undoubtedly a "treasure choice" — it not only has stable and reliable performance but also can adapt to the needs of multiple fields, truly deserving the title of "all-round cornerstone" that supports the material systems of multiple industries.