Method of manufacturing a waterproof connector housing

A method of manufacturing a waterproof connector housing, wherein a hollow housing having walls containing opposed, substantially parallel internal surfaces is placed between a male mold and a female mold for forming a packing ring, and a rubber material is introduced through passage means formed in said female mold into a packing ring-forming space that is defined by one or both of said male and female molds so as to form a packing ring which is an integral part of said housing, comprising the steps of:

• providing, on an outer surface of a wall of said housing, tapered protrusions which increase in dimension in a direction toward an open end of said female mold;
• providing said housing with wall-penetrating passages extending through said protrusions and defining rubber material supply passages for communication with said packing ring-forming space;
• providing said male mold with a cavity for receiving said housing walls and including a concentric engaging portion having external surface means adapted to engage the substantially parallel internal surfaces of said walls remote from said wall-penetrating passages and defining the ends of said housing walls,
• placing said housing on said male mold with said internal surfaces of said housing walls in said cavity in engagement with said external surface means of said male mold concentric engaging portion;
• pressing said tapered protrusions on said housing by moving said female mold axially with respect to said male mold in a direction of increasing dimension of said protrusions to tighten the engagement between said female mold and said housing while placing the passage means in said female mold in registry with the passages in said tapered protrusions;
• and
• introducing a rubber material through said supply passages into said space while holding said housing tightly in contact with said female mold.