Abstract: Apparatus (10) is for use in a cap applicator unit (12). The apparatus (10) comprises a spigot (14) comprising an elongate body (16) and a head (18) connected to one end of the elongate body (16), and an anvil (20) provided with a hole (22) therein, the elongate body (16) of the spigot (14) mounted in the hole (22) of the anvil (20). The size of the hole (22) of the anvil (20) is sufficiently greater than the size of the elongate body (16) of the spigot (14) to permit angular movement of the spigot (14) relative to the anvil (20). The apparatus (10) further comprises at least one tensioning device (24) and (36) arranged to provide a force tensioning the spigot (14) against the anvil (20).