Uneven or incomplete crimping on lead seals
For Security Seals specifically, checking that crimps are complete and even across a sample batch reveals whether the material and crimping equipment are actually working together correctly, since an incomplete crimp defeats the entire tamper-evidence function. JHAS
Visible flash or burrs on plastic seals
Excess plastic flash or sharp burrs along a seal’s molded edges indicate imprecise mold tolerances or worn tooling, a visual sign of broader manufacturing quality concerns worth taking seriously rather than dismissing as purely cosmetic. Follow us JHAS
Inconsistent locking engagement across sample units
Testing several sample units for locking engagement and noting any variation, some locking smoothly while others feel loose or require excessive force, reveals inconsistency in the locking mechanism’s manufacturing tolerance.
Corrosion or discoloration on metal components
Any visible corrosion or unusual discoloration on metal cable, wire, or housing components, even on new stock, suggests either poor material quality or inadequate protective coating, worth flagging before accepting a batch. JHAS
Illegible or inconsistent serial marking
Checking a sample of serial numbers for legibility and correct sequencing reveals marking process issues that would otherwise only surface later, when a specific seal’s number cannot be reliably read during field verification.
Brittleness or cracking under gentle stress testing
Gently flexing a sample
Security seals, within reason and not to the point of intentional destruction, can reveal unexpected brittleness that suggests either poor material grade or inadequate cooling during the molding process. Follow us JHAS
