In high‑end equipment sectors including aerospace, rail transit and ocean engineering, facilities continuously suffer from multiple harsh conditions such as ultra‑low temperature, intense radiation, ozone corrosion and transient ablation. This sets demanding requirements for comprehensive performance of damping‑buffering materials. As a special silicone damping substance, phenyl silicone rubber elastic putty has achieved large‑scale adoption in numerous critical‑equipment scenarios.

Also named phenyl silicone grease or elastic damping body, this phenyl‑based elastic putty appears as a grey viscous liquid. Its phenyl content ranges from 5.0 mol% to 30.0 mol%. Its viscosity at 25 ℃ spans 2000‑10000000 mPa·s. Such broad viscosity scope supports differentiated damping‑force design requirements from various equipment systems. Its most remarkable merit lies in ultra‑low‑temperature elasticity. It retains valid elasticity instead of rigidifying completely even at‑120 ℃. Furthermore, it integrates weather resistance, ozone resistance, radiation resistance, ablation resistance and self‑extinguishing properties into one material system.

For end‑use applications, the elastic putty is mainly matched with damping‑buffer components. Typical fields include aerospace hardware, high‑speed rail vehicles, ships, aircraft and bridge vibration‑absorbing structures. It also serves buffering‑protection purposes for metallurgy, mining and offshore‑platform industrial facilities. Relying on viscoelastic characteristics, it absorbs impact energy and dampens vibration transmission, protecting key structural parts and improving equipment stability and service life under complicated operating environments.

For packaging, transportation and storage, 20 kg plastic drums and 200 kg iron drums are available. The product shall be hermetically stored in cool and dry areas, kept away from direct sunlight, fire sources and heat sources, and managed as general‑purpose chemicals. Its shelf‑life is five years from manufacturing date. If post‑expiration testing confirms qualified technical indexes, the material remains usable for practical projects.

Industry observations indicate conventional methyl‑based silicone damping materials degrade rapidly below‑70 ℃ and cannot satisfy ultra‑low‑temperature requirements of deep‑space, polar and deep‑sea devices. Phenyl‑modified elastic putty fills this performance gap. Nevertheless, material selection should not merely rely on quoted minimum operating temperature. Evaluations must also cover viscosity at actual working temperature, compatibility with adjacent sealing components, and damping drift after repeated thermal cycles to prevent field‑service failures. Driven by domestic substitution of high‑end equipment, special damping silicone materials combining low‑temperature tolerance and anti‑radiation capability will face growing market demands in the future.