FF-S-2738A
3.5.1.2 Resistance to tampering. The seals shall resist tampering for a period of at least 30
seconds (see 3.4.1).
3.5.2 Style A - wire, type 2 - folding. This seal uses a spiral wound wire, single strand, two or 3
ply galvanized or stainless steel, specified by the user. The wire is passed through the closure
hasp on the container to be sealed. The ends are then inserted into a metal box which is locked
onto the serration's of the wire. The metal box is provided with points of frangibility to prevent
undetected reopening.
3.5.2.1 Physical requirements. Folded wire seals shall be formed sheet metal boxes which can be
locked onto a piece of wire. Boxes shall fracture upon reopening. Boxes shall be coated with
material which will discolor upon heating. Boxes shall be marked in accordance with 3.6. Wire
furnished with folding wire seals shall be spiral wound.
3.5.2.2 Resistance to tampering. The seals shall resist tampering for a period of at least 30
seconds (see 3.4).
3.5.3 Style A - wire, type 3 - cup. This seal consists of three cup shaped sheet metal stampings,
which mate together one way to form an enclosure protecting a crimp/wire seals' crimp point. One
hole allows the wire to exit and to pass through a hasp and return. It is a protected crimp seal, or
two seals in one. The interior of this seal lends itself to distinctive markings prior to sealing, which
if photographically recorded can be used to confirm authenticity of the seal when opened.
3.5.3.1 Physical requirements. Cup seals shall consist of formed sheet metal parts which snap
together to form boxes over the knotted wire. Boxes shall not be opened without damage to the
box. The box shall be marked in accordance with 3.6. Wire furnished with cup/wire seals shall be
15 strand stainless steel.
3.5.3.2 Resistance to tampering. The seals shall resist tampering for a period of at least 30
seconds (see 3.4.1).
3.5.4 Style B - padlock, type 4 - wire shackle. This seal uses a spring wire shackle which passes
through the hasp and is inserted into a block shaped in such a way that once the wire springs into
position the shackle cannot be removed without tearing or deforming the block.
3.5.4.1 Physical requirements. Wire shackle padlock seals shall be furnished with either a molded
plastic body or a stamped metal body. The wire shall be galvanized or stainless steel of 0.041,
0.047, or 0.055 inch diameter as specified by the user. The body shall be marked in accordance
with 3.6.
3.5.4.2 Resistance to tampering. The stamped metal body seal shall resist tampering for a period
of at least 1 minute (see 3.4.1). The plastic body seal shall resist tampering for a period of at least
15 seconds (see 3.4.1).
3.5.5 Style B - padlock, type 5 - plastic shackle. This seal consists of one piece of molded plastic
shaped similar to a padlock. The shackle is provided with locking devices to engage in the body
of the seal. Points of frangibility are provided on the shackle if desired for hand breaking on both
sides of wire hasp. This should be noted as "scoring required". Non-scored seals normally
require a cutting tool for removal.
3.5.5.1 Physical requirements. The hasp opening shall be nominally 1 inch by 1/2 inch. The seal
shall be marked in accordance with 3.6.
3.5.5.2 Resistance to tampering. The seal shall resist tampering for a period of at least 15
seconds (see 3.4).
3.5.6 Style B - padlock, type 6 - steel shackle. These padlock seals are keyless locks. The body
of the seal contains the locking mechanism. A hardened shackle is utilized.
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