Anti-aging sealing gasket for pipeline valves

The invention discloses an anti-aging sealing gasket for pipeline valves. The anti-aging sealing gasket for pipeline valves comprises the following raw materials: in parts by weight, 40-100 parts of ethylene-propylene rubber, 32-50 parts of silicone rubber, 10-19 parts of nitrile silicone rubber, 2-4 parts of a cross-linking agent, 20-30 parts of polyacrylonitrile-based carbon fiber, 6-12 parts ofheavy calcium carbonate, 3-6 parts of dispersing agents, 0.4-1 part of acetyl tributyl citrate, 1-2 parts of calcium stearate, 1-2 parts of butyl phthalate, 0.2-1 part of pentaerythritol, 1-3 parts of an anti-aging agent and 1-4 parts of an ultraviolet light absorbent, wherein the dispersing agents include a polyethylene wax composite and disproportionated rosin, and the polyethylene wax composite is prepared by using a following process: mixing polytetrafluoroethylene, acrylic acid and epoxy soybean oil uniformly, performing plasma irradiation and pulverizing, adding polyethylene wax, and performing stirring so as t