In industries such as power transmission, rail transport, nuclear energy, and defense, where extreme heat, radiation, and insulation demands are critical, traditional rubber materials often fall short. Hydroxyphenyl silicone rubber—an advanced silicone compound featuring both phenyl side groups and reactive hydroxyl end groups—is emerging as a key material for next-generation insulation and protective sealing systems.

Its structure integrates a high phenyl content within the siloxane backbone, ensuring excellent thermal resistance and radiation durability. It operates reliably between -60°C and +250°C, maintaining physical integrity and elasticity under extreme conditions. The hydroxyl functional groups enhance reactivity with fillers, resins, and crosslinking agents, supporting versatile curing systems and complex molding techniques.

Hydroxyphenyl silicone rubber is widely used in high-voltage insulators, electronic potting compounds, high-temperature cable sheaths, and nuclear reactor seals. Its stable dielectric constant, high breakdown strength, and low compression set contribute to extended equipment life and increased system safety. Even under high radiation doses exceeding 1000 kGy, it retains elasticity and structural integrity—outperforming conventional silicones and fluororubbers.

As critical industries demand greater material reliability, this silicone rubber is evolving toward enhanced transparency, flexibility, low modulus, and eco-friendly formulations. It is fast becoming the preferred solution for advanced insulation and sealing systems in extreme environments.