A closure (1) for a fluid container, particularly for water bottles (9) in driking water dispensers has an aperture (3) and a remobable hollow plug (4) of resilient plastics material fitting into the aperture in a sealing position and displaceable from the aperture, under pressure of an elongate member (11) of the dispensing apparatus, to an open position in which the fluid in the container can flow out through the elongate member. Preferably the elongate dispensing member fits into the hollow plug and is gripped and carried thereby so that when the elongate member is withdrawn, the plug is drawn back into the aperture to seal the container again.
