Sealing structure

A sealing structure comprising:

• a torsional vibration damper having a tubular part to be attached to a crankshaft the tubular part including an outer cylindrical surface;
• and
• an oil seal that seals an annular gap between an inner circumferential surface of a shaft hole in a housing for the crankshaft to pass through and the outer cylindrical surface of the tubular part,
• the oil seal including an oil lip provided such as to be slidable on the outer cylindrical surface of the tubular part, and a dust lip provided further on an opposite side from a sealed-fluid side than the oil lip and slidable on the outer cylindrical surface of the tubular part, and
• the sealing structure further comprising an annular member having a first portion fixed to the outer cylindrical surface of the tubular part further on the opposite side from the sealed-fluid side than the dust lip and having a second portion extending axially and radially outward from the first portion and having an inner circumferential surface directly overlapping an outer circumferential surface of the dust lip such that there is a gap between the second portion of the annular member itself and the outer circumferential surface of the dust lip.