With the rapid advancement of aerospace, rail transit, and high-temperature industrial systems, sealing materials are required to meet increasingly stringent demands in thermal stability and long-term durability. Hydroxyphenyl silicone rubber, with its outstanding heat resistance, radiation stability, and dielectric properties, is emerging as a key material in the development of next-generation high-performance seals.

This specialized silicone rubber incorporates both phenyl and hydroxy functional groups into the polysiloxane backbone, combining mechanical robustness with reactive potential. The phenyl groups enhance thermal-oxidative stability and reduce brittleness at low temperatures, while the hydroxy terminals enable strong reactivity for use in addition-cure systems and liquid silicone rubber (LSR) formulations.

Hydroxyphenyl silicone rubber is ideal for long-term sealing applications operating from -60°C to +250°C, including engine gaskets, thermal interface pads, and electrical insulation seals. It exhibits minimal thermal decomposition and volatilization under high heat, ensuring reliability and safety in critical components.

Beyond sealing, this rubber is also used to modify general-purpose silicone elastomers, enhancing heat and dielectric performance for demanding sectors like nuclear power, radar systems, and high-voltage electrical equipment. It opens up new possibilities for advanced insulation and specialty sealing products.

As high-end equipment manufacturing continues to evolve, hydroxyphenyl silicone rubber stands out as a powerful material, supporting breakthroughs in the performance and reliability of thermal sealing solutions.

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