1. Precise fit + reliable sealing: The T-shaped structure perfectly fits the groove of the socket connection of ductile iron pipes. After installation, it fits tightly without loosening. The static seal has a high anti-leakage rate and is suitable for slight displacement of the pipeline (to cope with ground subsidence and installation deviations), completely preventing fluid leakage. 

2. Strong material compatibility: SBR (styrene-butadiene rubber) is mainly characterized by its resistance to water, normal temperature (-20℃ to 100℃), and weak acids and weak bases (pH 4-10). It perfectly matches water-based media such as tap water, municipal sewage, agricultural irrigation water, and industrial circulating water. By avoiding oils and strong solvents, it can be used stably. 

3. Cost-performance optimization: The SBR rubber rings have a lower production cost, while also possessing excellent elasticity recovery and aging resistance. They are suitable for large-scale laying scenarios such as municipal pipelines, residential pipelines, and agricultural water conservancy projects, thereby reducing the overall project cost. 

4. Easy installation + Excellent durability: The material is soft and compressible, and the socket-joint installation requires no complex tools, resulting in high construction efficiency; the surface is wear-resistant and tear-resistant, and it can withstand soil compression and microbial erosion when used underground, with a long service life. 

5. Wide compatibility of the scene: Specifically designed for ductile iron pipes, it is suitable for medium and low pressure (≤1.6MPa) pipeline systems, covering various scenarios such as municipal water supply and drainage, sewage treatment, agricultural irrigation, industrial water transportation, and building supporting pipelines, etc. It has strong versatility.