Abstract: A tote bin seal for securing sheet material lids via aligned lid apertures includes a flange forming an ID flag attached to a locking device having a hollow core body at one body end and two semi-circular arrays of tangs at the other body end, the tangs formed of stems and reverse hooks or barbs. The body is somewhat oval with a rectangular central portion, the tangs depending from each arcuate end of the oval. Each of the tangs and the body have an interior axially extending triangular stiffening rib. An insert with a head and a bifurcated shank is attached to the flange opposite the body and may be sheared from the flange for insertion into the body core. The shank forms a locking opening which captures a web in the body core for securing the insert locked to the body. The insert prevents the tangs from compressing inwardly to open the seal. The flange has a living hinge so it can be folded over to permit reading ID data from the flange in stacked bins.