SEAL FOR AIR DAMPER AND AIR DAMPER FOR AUTOMATIC CLOSING SLIDING DOOR

摘要

PROBLEM TO BE SOLVED: To provide a seal for an air damper which is capable of preventing a seal surface from closely sticking to an inner peripheral surface of an air cylinder, and an air damper for an automatic closing sliding door used for the same and having a smooth closing operation. SOLUTION: The air damper for an automatic closing sliding door is characterized by that a projection formed area 25 in which many fine projections 26 are formed is provided to the seal surface 24 of the seal 21 for the air damper, and this seal 21 for the air damper is mounted to a mounting groove 3a provided to a base end part of a piston rod 3.