Abstract: A process for placing a preformed fitting in a groove located at the periphery of a bore and a device for use in this process. An obstacle with an external diameter slightly less than the diameter of the bore, is positioned immediately beyond the groove. A fitting, which is kept deformed so that it is circumscribed by a circle of diameter which is at most equal to the diameter of the bore, is introduced into the bore and is brought to a right angle with reference to the groove. The deformation of the fitting is then relieved so that the fitting is introduced into the groove. The invention can be used for manipulation and placing of toric pieces made of deformable plastic material.

Abstract: A tool is provided for the extraction of preformed fittings placed in a peripheral groove hollowed into the wall of a bore. A pincer device is formed by two tapered noses, one fixedly attached to a hollow body and the second attached to a piston capable of sliding within the hollow body. An adjustable stop controls the width of the pincer device, and a reference marking indicates the setting of the stop. A grip sleeve and positioning holder assist a user in operating the tool.