About fixed-length seals

Navacqs fixed-length seals are designed for quick visual inspection. The click mechanism locks at a fixed length, leaving clearance around a latch or TIR cable. Every seal carries a one-off print with sequential numbering, making each piece unique and ideal for registration and fraud prevention. Plastic versions can be broken by hand once removed; metal versions require pliers.

Types of fixed-length seals

The plastic range offers three options. The Sydex Seal 215 is a slim blue seal six millimetres wide with a breaking strength of fifteen kilograms; the white print is applied directly to the strap for high legibility. The NSS560-L measures 293 millimetres, includes a flag for even clearer printing and breaks at fourteen kilograms. For maximum plastic strength there is the Plastic Truck Seal made of HDPE; thanks to an acetal insert it reaches twenty-eight kilograms and is ideal for truck doors, empty containers and rail wagons. Metal versions offer even greater strength. The Tyden Ball Seal is customs approved, features the classic click-ball mechanism and reaches fifty-two kilograms. The Metal Flat End Seal Guard Lock uses a patented locking system, achieves around forty-five kilograms and is a cost-effective alternative.

Applications

Fixed-length seals are often used on rear doors of trucks and trailers because the preset length always maintains some slack and absorbs shocks. Slim models such as the Sydex Seal, NSS560-L and Tyden Ball Seal pass easily through the eyes of TIR cables around curtain-side trailers. Wider plastic and metal models suit empty containers or rail wagons. In warehouses these seals keep roll cages or racks secured without fully tightening the strap.

Breaking strength

Plastic fixed-length seals typically range between fourteen and thirty kilograms and are meant for situations where a seal may need to be broken by hand in an emergency. Metal versions start at about 45 kilograms and go beyond 50; they always require bolt cutters or heavy pliers and therefore provide extra security when needed.

Custom logo or printing

Navacqs supplies every fixed-length seal as standard with the text “SEALED” and unique numbering. From 1 000 pieces you may add your company name, logo or a customs or TIR number. Depending on the model you also choose the seal colour, and the print can include a bar or QR code for digital tracking. Production starts only after you approve the artwork, ensuring every shipment leaves safely and recognisably. Feel free to request a sample or quotation via +31 10 495 0000 or sales@navacqs.com.