In high-end manufacturing fields such as aerospace, rail transportation, high-temperature electronics, and new energy systems, sealing materials are facing increasingly stringent performance requirements. Phenyl silicone rubber elastic putty has emerged as an ideal material for sealing and bonding in extreme environments, thanks to its excellent thermal stability, flexibility, and plasticity.

This putty is formulated with high-phenyl-content silicone rubber as the base, combined with high-temperature crosslinking agents, reinforcing fillers, and tackifying additives. It remains moldable at room temperature and offers non-sagging, non-curing characteristics. With a stable working range from -60°C to +250°C, it is especially suitable for applications requiring resistance to thermal cycling, UV exposure, and mechanical shock.

In the aerospace sector, this material is widely used for sealing gaps in spacecraft bodies, propulsion systems, and electronics compartments, where it must withstand vacuum, heat, and radiation. In rail transit and power equipment, phenyl silicone putty effectively seals structural gaps, electrical joints, and sensor interfaces, enhancing the overall system protection grade.

Its compressible, flexible nature also makes it ideal for battery pack sealing in new energy vehicles, LED lighting assemblies, and military equipment. Notably, its non-curing nature allows for easy disassembly and reapplication, significantly improving maintenance efficiency compared to traditional curing sealants.

Today’s market offers phenyl silicone putty products in various hardness levels, adhesion profiles, and thermal grades, meeting diverse demands for workability, chemical resistance, and environmental adaptability. With continuous formula advancements, these materials are making significant strides in sealing performance, aging resistance, and environmental safety.

The growing adoption of phenyl silicone rubber elastic putty marks a shift from rigid to flexible sealing solutions, delivering greater reliability, safety, and sustainability for critical applications across multiple industries.