Distributor having an incorporated seal and method for producing same

Hydraulic rotary distributor including a case and a core, said case comprising a lateral wall, two end walls defining a hydraulic chamber, wherein the core capable of rotating in said chamber about an axis of rotation is housed, at least one supply orifice, and at least one outlet orifice, which open(s) into the hydraulic chamber, the core including a lateral surface facing the lateral wall of the case, an inlet opening, at least one lateral outlet and a duct or a chamber that connects said inlet opening and said lateral outlet and that allows a supply of each of said outlet orifices according to the angular position of the core in the case, the core further including at least one seal for sealing between the lateral surface of the core and an outlet orifice of the lateral wall of the case, each seal being non-removable with respect to the core, each seal also including one or more fastening and/or injection lug(s) in the lateral surface of the core, said lugs forming one piece with the seal.