A printhead is provided having a plurality of printing fluid ejection nozzle modules each having one or more printing fluid channels interconnected at respective complementary female and male end portions of the modules, a connector connected to the female or male end portion of one of the modules for communicating printing fluid from a fluid supply to the nozzles of all of the modules via the interconnected channels, and a sealing member connected to the female or male end portion of another one of the modules. The sealing member has female and male portions complementary to the female and male end portions of the modules and for sealing the channels of the connected module.