Pump for sealing the neck of a bottle and spray product packaging comprising said pump and a bottle

1. A pump able to close off the neck of a bottle comprising a body made from flexible material, the top part of which, after assembly of the pump in the neck, is held at the external edge of the neck, a pumping mechanism enclosed in said body made from flexible material, and a rigid sleeve interposed between said pumping mechanism and said body and provided with a ring embedded in said body characterized in that said ring is able to provide an annular space between the external surface of said sleeve situated above said ring and the opposite internal surface of the body, said annular space being of dimensions such that, after assembly, the radial distances between said external surface of the sleeve and the opposite internal surface of the neck of the bottle are greater than or equal to the thickness of the body made from flexible material, in the non-stressed state.

2. A pump according to claim 1 , characterized in that said top part of the body made from flexible material consists of a flange.

3. A pump according to claim 1 , characterized in that the rigid sleeve comprises at its top end a flange at least partly covering said top part of the body.

4. A pump able to close off the neck of a bottle according to claim 1 , characterized in that the height of the annular space corresponds substantially to the height of the neck of the bottle.

5. Packaging of a product to be sprayed comprising a pump according to claim 1 and a bottle made of fragile material.

6. Packaging of a product to be sprayed comprising a pump according to claim 1 and a glass bottle.