In fields such as RTV silicone rubber, electronic sealing, and textile fabrics, the quality of the base material directly determines the quality of the finished product. High molecular weight hydroxyl-terminated raw rubber (IOTA 107GUM) is like an "all-round player"—with its million-level molecular weight and super adaptability, it has become a "core partner" in the production of multiple industries, enabling the easy development of various high-performance products.  

First, let’s look at its "external appearance" and "internal strength":  
- Appearance: It is a colorless, transparent semi-solid that feels like fine transparent soft rubber, without any impurities or off-colors. Whether mixed with other materials to make rubber or prepared alone as an additive, it will not cause "trouble" to the finished product. For example, when making transparent electronic sealants or light-colored wool fabrics, it can maintain a pure texture.  
- Key indicators:  
  - Purity exceeds 99%, meaning there are almost no excess "impurity molecules". Using it as a raw material can largely avoid performance instability in finished products.  
  - Molecular weight ranges from 400,000 to 1,000,000, making it a typical "high molecular weight" material. Simply put, its molecular chains are extremely long, like a tightly woven "elastic net"—this gives it sufficient strength while allowing flexible deformation, so it is not easily damaged during processing such as stretching, pulling, or pressing.  
  - Volatile content is less than 3%. Even when processed or used in high-temperature environments, it hardly "escapes" to cause losses, nor does it release harmful substances, ensuring production safety and durability of finished products.  

Its core advantages lie in the dual characteristics of "hydroxyl termination" and "high molecular weight":  
- Hydroxyl groups are like the "small hands" of the material, which can easily "shake hands" (react) with other substances. Therefore, in the production of RTV silicone rubber and pressure-sensitive adhesives, it can efficiently cooperate with cross-linking agents to produce rubber products with good elasticity and resistance to cracking.  
- The excellent insulation and heat resistance brought by high molecular weight make it a "protection expert" in the electronic field. After being made into potting and sealing materials, it can "put on a protective coat" for radios, electronic instruments, and semiconductor components—not only blocking moisture to prevent short circuits, but also cushioning vibrations and resisting high temperatures. Even if electronic equipment is exposed to the sun outdoors or in bumpy environments, it can work stably.  

Its application scenarios cover multiple industries:  
- The automotive and machinery industries use it to make rubber rollers. Relying on its wear resistance and elasticity, the rollers are not easily deformed even after long-term operation.  
- The textile industry uses it as a smoothing agent for wool and cashmere. Adding just a little can make the originally somewhat rough wool fabric soft and smooth, with a very comfortable touch.  
- The construction industry uses it as a joint sealing material, which can tightly fill the gaps in walls, doors, and windows. It is waterproof and anti-aging, making buildings more durable.  
- Even when making two-component silicone rubber molds, it can help the molds demold easily, ensuring that the fine patterns on the molds are clear and complete.  

Whether in the electronic field that requires strong insulation or the textile industry that pursues soft texture, this high molecular weight hydroxyl-terminated raw rubber can be accurately adapted to, and it can be called a "treasure raw material" for multiple industries.