Patent ID: 7771412

Claim:
An environmental seal for a fluid delivery device, comprising: a cap comprising: a carrier portion including a proximal end and a distal end and a channel extending through the carrier from the proximal end to the distal end; a plug located in the solid carrier portion, the plug being configured to slidably receive a cannula therethrough; and wherein the cap is formed in a two-shot molding process such that a first shot forms the carrier portion and a second shot forms the plug in the carrier portion and obstructing the channel, wherein the carrier portion is formed from a material having a relatively high durometer and the plug is formed from a material having a relatively low durometer; and a cap receptacle configured to mate with the cap, wherein the cap receptacle includes a proximal end and a distal end and a channel extending through the cap receptacle from the proximal end to the distal end, wherein the distal end of the carrier portion comprises an inner sleeve surrounding the plug, and wherein the proximal end of the cap receptacle comprises an outer sleeve configured to mate with the inner sleeve of the carrier portion and to apply a compressive force to the inner sleeve and the plug.