Patent attributes
Provided is a segmented seal that is capable of suppressing the progress of wear in a key groove and thereby attains improvement in the durability of a seal ring. The segmented seal includes a key groove (15), as seen in an axial direction, has a groove body portion (15a) extending in a radial direction and a pair of clearance groove portions (15b, 15c) expanding to both sides of the groove body portion (15a) so as to be away from a key (50) on the inner peripheral surface side, and among the pair of clearance groove portions (15b, 15c), the clearance groove portion (15c) on an upstream side in a rotating direction ® of the rotating shaft (200) is configured to expand to an outer peripheral surface side beyond a tip end (50a) on an inner peripheral surface side of the key (50).