To provide a parting seal capable of improving seal ability.SOLUTION: There is provided a parting seal comprising: a seal lip 13 extending to a front door sash side; and a sub lip 14 extending to a rear door sash side, the lips being branched, and the seal lip 13 and the sub lip 14 are connected to an attachment base part 11 through a connection base part 15. Therefore, when the seal lip 13 is lifted to a vehicle interior side by the front door sash, whole seal part 12 is rotated in a seesaw state around the connection base part 15 with the connection base part 15 as a fulcrum, and the sub lip 14 can be brought into tight contact to the rear door sash. Therefore, generation of a gap between the sub lip 14 and the rear door sash can be suppressed, and seal ability of the parting seal 1 can be improved.SELECTED DRAWING: Figure 3
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