US Patent 7503595 Fitting having low volume crevice

A fitting for a fluid conduit includes a coupling body having an inside surface for engaging an outside surface of a fluid conduit and a shoulder portion for limiting axial insertion of the fluid conduit into the coupling body. At least one seal is formed on the inside surface of the coupling body. The at least one seal includes a proximal seal adjacent the shoulder portion. A ring is annularly disposed on the coupling body urging the at least one seal into the fluid conduit to seal and mechanically connect the coupling body to the fluid conduit.