Cable Seals-China Security Seals No: SY-021 Materials: Pull-tight cable seal with flexible stainless steel wire, Die-casting aluminum lock body. Spef: SY-021S dia. of 1.5mm, F>2500N SY-021S dia. of 2.5mm, F>4500N SY-021M dia. of 3.0mm, F>7400N SY-021L dia. of 5.0mm, F>10000N (250mm standard length,other per requested.) Packing: 250pcs/ctn Key Applications: Heavy duty adjustable cable seal for doors, meters, cargo, and drums.