A pipe cap comprising a body; a close-ended bore defined by the body, being sized and dimensioned to accept and rigidly retain an end of a pipe section; an end connector wherein the bore extends out through the end connector; a gasket well in the internal surface of the bore; a gasket for sealing the body to the end of the pipe section, and preventing fluids from flowing out the end of the pipe section; a gasket retaining ring within the gasket well, comprising a shoulder and retaining the gasket within the gasket well; and a gripper washer disposed in the internal surface of the bore, the gripper washer retained between the end connector and the gasket retaining ring, the outer periphery of the gripper washer is in contact with, or in close proximity to, the shoulder of the gasket retaining ring.