Connector

1. A connector comprising:

a housing that includes a fitting portion having an outer periphery to which a cylindrical counterpart fitting portion of a counterpart connector is loosely fitted;

a ring-shaped packing that includes a main body that is formed of an elastic member and is externally inserted in a tightly fitted manner to the outer periphery of the fitting portion so as to water-tightly seal a space between the fitting portion and the counterpart fitting portion;

a ring-shaped resin ring portion that is provided at a base end of the packing opposite to a distal end where the counterpart connector is fitted, so as to be integrated with an outer periphery of the main body, is formed of resin having a higher rigidity than the main body, and is locked to an engagement portion provided in the housing; and

a notch portion that is provided in a part of an inner periphery of the resin ring portion.

2. The connector according to claim 1 ,

wherein the distal end of the main body has smaller inner and outer diameters than other portions of the main body excluding the distal end and has a tapered thick portion that is formed to be thicker than the other portions.

3. The connector according to claim 1 ,

wherein the resin ring portion is formed in a polygonal ring shape, and

the notch portion is formed in at least one internal corner portion of the resin ring portion.

4. The connector according to claim 3 ,

wherein the distal end of the main body has smaller inner and outer diameters than other portions of the main body excluding the distal end and has a tapered thick portion that is formed to be thicker than the other portions.