Continuous steel strapping seals

A strip of multiple, substantially identical seals, each seal for sealing around overlying courses of strapping material to form a seal of the strapping material onto itself at the overlying courses, comprising:

• an elongated strip of ductile metal, the strip having a longitudinal direction having edges and defining a longitudinal axis parallel to the edges and a transverse direction normal to the longitudinal axis, each seal defining a respective transverse axis, the strip having a plurality of substantially identical slots formed in the transverse direction defining respective seals, the slots extending toward but not to the edges of the strip and defining connecting portions between ends of the slot and the respective edges, the slots being equally spaced from one another in a longitudinal direction to define the respective seals,
• wherein the strip has parallel, longitudinally extending fold lines crossing the slots, inward of the respective edges, and slits cut into the seals, the slits extending in the transverse direction across the fold lines and toward, but not to the edges.