A tissue puncture closure device that includes an anchor (208, 508), a sealing pad (210, 510), a compaction member (212, 312, 412, 512), a suture (204, 504), and a suture cutting member (270, 472, 570). The compaction member is configured to compact the sealing pad toward the anchor. The suture is coupled to the sealing pad and anchor, and a portion of the suture extends through at least a portion of the compaction member. The suture cutting member is operable to cut the suture. The suture cutting member is operable within a portion of the compaction member to cut the suture.