US Patent 7329145 Structure for attaching gasket

A gasket of an elastic material is housed in a ring-shaped groove formed on the front face of a flange of a connector housing. By bringing the front face into contact with a contact face of a mating member, the space between the mating member and the flange of the connector housing is sealed with the gasket. An L-shaped locking arm is provided on the outer periphery of the ring-shaped gasket to be housed in the ring-shaped groove. The locking arm juts out sideward along the front face of the flange, and then is bent backward leaving the front face. A T-shaped hook is integrally provided to the tip of the locking arm. A receiving portion with a locking slot is provided in a side portion of the flange. The locking arm is engaged, by its own elasticity, with the locking slot, and the hook is engaged with the back face of the receiving portion.