A syringe hub comprises a hub body which is engagable with a syringe body, a needle held by the hub body, a movable bung element within a flow passage of the hub body, and at least one fixed engagement element which extends laterally to the longitudinal extent of the flow passage and which is non-releasably engagable with the bung element to block a flow path defined by the hub body and the needle. The movable bung element including a cap element which extends laterally to the longitudinal extent of the flow passage and a splayable engagement element which extends from the cap element. The splayable engagement element includes a plurality of legs. A syringe which has a syringe body and the said syringe hub is also provided.
