Sealants, cylinder diaphragm linings, and aerospace/aeronautic products featuring high oil resistance, flame retardancy, and high-temperature resistance are produced from a functional material optimized with flame retardants, antistatic agents, and fillers. The manufacturing process includes blending, mixing, reprocessing, calendering into sheets, and vulcanization. The physical and mechanical properties meet the GB5574-85 rubber sheet standard, with a volume resistivity of 3.3×10³ Ω·cm and flame retardancy that extinguishes upon removal of the flame. This material is primarily used for manufacturing industrial components such as seals and cylinder diaphragm linings, and is also applied in aerospace and aeronautic fields.