Stat-Pak Plain Knitted Retraction Cord, #000, Black, 100"/Bottle. Stat-Pak Knitted Retraction Cord is used to retract sulcular tissue, protect tissues and arrest sulcular fluid seepage. With compressible, interlocking chains, knitted Stat-Pak Dental Retraction Cord carries more hemostatic agent to the sulcus and remains in-situ, even when touched by a bur or diamond.