A deployment device having a carrier tube, for bringing a sealing plug into position within a puncture tract or incision and deploying the sealing plug within the incision or puncture tract, towards the outer surface of a tissue puncture, is provided. The carrier tube is designed to facilitate easier deployment and improved compaction of the sealing plug, the sealing plug often made of collagen. The carrier tube is adapted to prevent the premature hydration of the sealing plug, where premature hydration of the sealing plug may result in difficulty in deploying the sealing plug. The carrier tube is designed to facilitate easier loading of puncture tract closing elements into the distal end of the carrier tube.