Sealing wire is the thin twisted wire that threads through a lead or pull seal to secure meters, cabinets, wagons and public assets. Because it passes through the item and the seal, cutting or removing it leaves clear evidence of tampering. In addition, it comes in several materials — galvanized steel, copper, brass, nylon-copper and stainless — so the choice depends on strength, corrosion resistance and the method. Most types are supplied on spools, together with matching lead seals and fittings. Therefore, this indicative approach suits utility metering, customs and asset control rather than high-security barrier sealing.
Materials and uses
Because conditions differ, the table below compares the main wire types and their typical use.
Material
Property
Typical use
Galvanized steel
Strong, low cost
General lead-seal work, wagons
Copper
Soft, easy to twist
Meters, electrical assets
Brass / red brass
Corrosion-resistant
Damp or outdoor sealing
Nylon-copper
Coated, low-marking
Sensitive surfaces
Stainless (AISI 304)
High corrosion resistance
Harsh or wet environments
Sold by spool; pair it with matching lead seals and a sealing tool.
Frequently asked questions
Show FAQ
What is it used for? The wire threads through a lead or pull seal to secure meters, cabinets and wagons. Because removal leaves clear evidence, it shows tampering rather than resisting forced entry.
Which material should I choose? Galvanized steel suits general work, copper is soft and easy to twist, and brass or stainless resist corrosion. Therefore, match the material to the strength and the environment.
Is this high-security? No. Wire and lead seals are indicative, so they reveal tampering. For barrier strength, choose a bolt or cable seal instead.