Valve sealing gasket for fluid control system

In the industry of sealing components, especially in the industry of valve sealing components, sealing components materials used by common outdoor sealing components have the technical problems that the hot air aging resistance is poor and the tensile properties thereof cannot meet requirements, which are to be solved urgently. The invention discloses a valve sealing gasket for a fluid control system. The valve sealing gasket comprises the following raw materials in parts by weight: 80-120 parts of polyethylene, 30-50 parts of polyurethane rubber, 18-24 parts of magnesium hydroxide, 10-20 parts of microencapsulated red phosphorus, 15-25 parts of precipitated barium sulfate, 6-12 parts of a glass fiber, 10-20 parts of nanometer talcum powder, 25-45 parts of coconut shell charcoal, 1.5-2.5 parts of a silane coupling agent, 2-6 parts of gum arabic, 2-4 parts of hydroxyethyl cellulose, 2-4 parts of a plasticizer and 2-4 parts of an antiager. The valve sealing gasket is halogen-free, flame-retardant, resistant to