Connectors with spring contacts for electrical stimulation systems and methods of making and using same

A connector assembly, comprising:

• a connector body having an elongated shape with a first end, an opposing second end, an inner circumferential wall, and a longitudinal axis, the connector body defining a port at the first end configured and arranged to receive a proximal portion of a lead or lead extension, the port opening to a cavity defined within the connector body and bound, in part, by the inner circumferential wall;
• and
• a first contact assembly and a second contact assembly axially spaced-apart from one another within the cavity of the connector body and collectively forming a lumen that extends from the port along the longitudinal axis of the connector body, the first and second contact assemblies each comprising
• a contact housing having a first sidewall, an opposing second sidewall, and an outer circumferential surface, the contact housing defining circumferential chamfers extending between the outer circumferential surface and each of the first and second sidewalls, and
• a connector contact disposed in the contact housing and exposed to the lumen;
• and
• a seal disposed within the cavity between the first contact assembly and the second contact assembly, the seal comprising
• a deformable, washer-shaped seal body having an outer circumference, and
• a deformable flange disposed around the outer circumference of the seal body;
• wherein the seal is positioned between the contact housings of the first and second contact assemblies with the flange positioned between opposing ones of the circumferential chamfers of the first and second contact assemblies.