cylindrical shape may slide the receptacle 1 and the plunger 5 are preferably made from one and the same material for example polypropylene the cylinder 2 is open at both its ends inside this cylinder 2 is placed a second cylinder 6 which is closed at its upper part so that the two cylinders 2 and 6 are coaxial the internal cylinder 6 is fixed to the main cylinder 2 by fastening tabs 7 arranged in the annular space separating the two cylinders just one fastening tab is represented in fig1 but the device preferably has three or four of these thus the internal volume of the receptacle 1 communicates with the inside of the plunger 5 via the annular space separating the two cylinders 2 and 6 this space is however closed off by a collar 8 made of an elastically deformable material for example made of a natural or synthetic rubber a butadiene styrene copolymer silicone or alternatively nitrile rubber the deformable collar 8 has a substantially cylindrical shape and provides a connection between the body of the receptacle 1 and the plunger 5 it is retained on the lower edge 9 of the plunger 5 by a bead 10 while a second bead 11.