Sealing leather film for braking

The utility model provides a sealing leather membrane for braking, which comprises a leather membrane body, an assembly hole is arranged on the leather membrane body, and a plurality of annular sealing ribs are arranged on the inner circular surface of the assembly hole at intervals. The three annular sealing ribs are arranged on the inner circular surface of the assembly hole at intervals to form a three-sealing structure, so that the sealing performance of diaphragm assembly is effectively improved; through the arrangement of the sealing supporting lip, supporting is provided for the leather membrane after the leather membrane is assembled; the thickness of the second bent section is smaller than that of the second gentle section and the third gentle section, so that the membrane of the second bent section is easier to move, good in flexibility and anti-fatigue. 本实用新型提出了一种制动用密封皮膜，包括皮膜本体，皮膜本体上开设有装配孔，装配孔内圆面上间隔设置有多个环形密封筋。本实用新型装配孔内圆面上间隔设置有三个环形密封筋，形成三密封结构，有效提高皮膜装配的密封性；通过设置密封支撑唇，在皮膜装配之后，为皮膜提供支撑；第二弯曲段的厚度小于第二平缓段、第三