▎ 摘　　要

NOVELTY - High-strength oil-resistant fluorosilicon sealing material, comprises 100 pts. wt. high cis-structure fluorosilicone crude rubber, 5-60 pts. wt. reinforcing filler, and 0.5-4 pts. wt. vulcanizing agent; where the cis-methyltrifluoropropylsiloxane structure content in the high cis-structure fluorosilicone crude rubber is ≮ 20%, preferably ≮ 50%. USE - The fluorosilicon sealing material is useful in engines (claimed). ADVANTAGE - The fluorosilicon sealing material: utilizes fluorosilicone crude rubber with high cis structure, and does not need to be blended with other high-strength rubber to improve its mechanical properties, which makes the material with more excellent weather resistance and oil resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing high-strength oil-resistant fluorosilicon sealing material, comprising mixing high cis-structure fluorosilicone crude rubber and reinforcing filler, then adding vulcanizing agent and dispersing, and forming through one-stage vulcanization and two-stage vulcanization, where the one-stage vulcanization temperature is 140-180 ℃, preferably 150-160 ℃, and the two-stage vulcanization temperature is 140-220 ℃, preferably 160-200 ℃.