Waterproof connector and sealing element

Provided are: a waterproof connector having a reduced cost; and a sealing element that imparts waterproof properties to the connector. A sealing element (20) of a waterproof connector has a shape in which a series of sealing portions that waterproof the periphery of an electric wire that is sandwiched between an inner housing (30) and an outer housing (40) and is not illustrated, and a sealing ring portion that performs waterproof between the sealing ring portion and a mating housing (2A) are integrated. A vertical plate portion (31) of the inner housing (30) penetrates through a long hole (22) of the sealing element (20), and a portion (43) of the outer housing to be snapped is formed in an upper portion of the vertical plate portion (31) and is snapped with a hook-shaped snap protruding portion (311). The inner housing (30) and the outer housing (40) are thereby assembled in a state in which the series of sealing portions of the sealing element (20) are sandwiched between the inner housing (30) and the oute