In high-temperature sealing fields such as new energy systems, rail transit, and aerospace engines, the thermal stability and reliability of materials are critical. Recently, hydroxyphenyl silicone rubber has emerged as a preferred material for high-end seals, thanks to its excellent heat resistance, low volatility, and flexible processing characteristics.

Outstanding Thermal Resistance

By incorporating phenyl structural units, hydroxyphenyl silicone rubber exhibits significantly improved oxidative thermal stability. It can withstand continuous temperatures exceeding 280°C while maintaining elasticity and sealing properties under harsh thermal cycling. This makes it ideal for high-temperature O-rings, gaskets, and insulation components in thermoelectric devices.

Flexible Processing and Strong Adhesion

The hydroxyl groups in its molecular structure enhance its reactivity in addition or condensation curing systems. It can be easily formulated with silane coupling agents and fillers to meet specific performance needs. It also adheres well to metals, ceramics, and composite surfaces, ensuring reliable sealing under dynamic conditions.

Expanding Applications Across Industries

Beyond aerospace and industrial heating seals, hydroxyphenyl silicone rubber is also applied in LED packaging, high-temperature oil pump seals, and other demanding environments. Its low volatility, thermal durability, and adhesion performance make it increasingly valued in high-end equipment manufacturing.

As demand grows for advanced silicone materials, hydroxyphenyl silicone rubber is playing an increasingly vital role in critical technologies for sealing and electrical insulation.