Which sleeving material is known for its flame resistance in aircraft applications?

Silicon rubber is recognized for its superior flame resistance and is commonly used in aircraft applications where safety is paramount. Its properties make it highly suitable for environments that could expose materials to high temperatures or flames. Unlike other materials that may not have the same level of flame resistance or could degrade more quickly under heat, silicon rubber maintains its integrity and functionality, making it a preferred choice in critical aircraft electronics.

Additionally, silicon rubber offers flexibility and durability, which are essential characteristics in the demanding aircraft environment. It can withstand harsh conditions while providing necessary insulation for electronic components. This combination of flame resistance, flexibility, and durability is what makes silicon rubber the correct answer in this context when discussing materials used for sleeving in aircraft applications.