▎ 摘　　要

NOVELTY - Sealing ring of supercharger, comprises nitrile rubber, fluorine rubber, carbon black, barium sulfate, talcum powder, graphene, magnesium oxide, magnesium stearate, an anti-aging agent and a vulcanizing agent. USE - Sealing ring of supercharger used in turbocharger-type engine. ADVANTAGE - The supercharger sealing ring is prepared by adding fluorine rubber into the nitrile rubber to mix, and improves the filling agent, which makes the nitrile rubber/fluorine rubber material of oil resistance, greatly improves heat resistance, and meets the performance requirement of preparing the sealing ring. The method optimizes the raw material component and preparation technique of the ring, which greatly improves each performance of the seal ring material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a seal ring of a supercharger, which involves: (1) mixing nitrile rubber, fluororubber and carbon black in proportion for a first-stage mixing to obtain P1; (2) mixing barium sulfate, talcum powder, graphene, magnesium oxide, magnesium stearate and an anti-aging agent according to a ratio, then adding P1 and a vulcanizing agent, mixing and carrying out secondary mixing to obtain P2. (3) The ring-shaped sealing ring is prepared by processing through an injection molding method by using P2.