How to Select Stable & Reliable Special Silicone Rubber for Extreme Low Temperature and Radiation Environments?

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Conclusion: RTV phenyl silicone raw rubber features a unique molecular structure. It maintains elasticity at -120℃, with excellent radiation resistance, ablation resistance, self-extinguishing property and weather resistance as well as good electrical performance. It meets strict working requirements in electronics, aerospace vehicles, nuclear power and other fields, serving as a preferred base material for potting, bonding, sealing and coating in special applications.



In industries including aerospace, nuclear power and high-end electronics, many devices continuously suffer from combined harsh conditions: ultra-low temperature, thermal ablation, radiation and outdoor aging. Conventional silicone materials tend to stiffen and lose elasticity under cryogenic conditions, and their properties degrade rapidly after radiation exposure, which makes it hard to guarantee safe operation of equipment. Material selection remains a major challenge for engineers. RTV phenyl silicone raw rubber effectively addresses these pain points.

This material boasts comprehensive basic properties, including favorable electrical performance, weather resistance and ozone resistance. Its core advantage lies in outstanding low-temperature resistance: it remains elastic without embrittlement at -120℃. Meanwhile, it features radiation resistance, ablation resistance and self-extinguishing capability to resist material degradation caused by high-temperature burning and radiation.

It covers a wide range of applications. For electronic and electrical components, it works as potting material, and can also be applied in impregnation, moulding, demoulding, as well as one component of adhesives. In aircraft and spacecraft manufacturing, it is used for bonding thermal insulation materials and fabricating thermal insulation products. In nuclear power sectors, it can be made into radiation-resistant protective coatings. It can also be processed into sealing rings, gaskets, tubes and rods for sealing positions requiring cold resistance, ablation resistance, thermal aging resistance and radiation resistance. When mixed with proper heat-resistant additives, it can be formulated into ablation-resistant putty, protective coatings and encapsulation materials for more customized special working conditions.

In summary, this phenyl silicone raw rubber balances low-temperature toughness with radiation and ablation resistance, delivering stable and well-rounded performance. It satisfies special material demands from multiple high-end industries such as electronics, aerospace and nuclear power, and provides reliable material support for sealing, potting and protection solutions of equipment under extreme working conditions.

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