S306 Pull-Tight Plastic Seal (Indicative Security Seal)

No.S306

The S306 is a lightweight, cost-effective pull-tight plastic seal made from polypropylene (PP). With an overall length of 375 mm and a 30 × 20 mm flat print flag, it is designed for bags, boxes, totes, truck doors, courier parcels and inland-logistics points where an indicative tamper-evident device is sufficient.

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Key Features

Polypropylene body – flexible in cold weather, UV-stabilized, corrosion-resistant; same PP-strap logic.

Pull-tight adjustable loop – thread tail → pull to tension → auto-lock; no tools to apply.

Tool-free easy-open – tear-off tab lets authorized users break the seal by hand; any reverse pull or cut still shows tamper marks.

Laser marking on 30×20 mm flag – sequential serial number, 1D barcode, QR code and customer logo laser-engraved (not ink), permanent and smear-proof.

Breaking strength F = 300 N – indicative grade, aligned with peer 375 mm PP seals.

Anti-UV & anti-corrosion – suitable for warehouses, cold-chain totes, sheltered outdoor use.

Color coding – red / blue / black / green standard; other RAL/Pantone colors customizable per request.

Technical Specifications

Item	Specification
Overall length	375 mm
Print area (flag)	30 × 20 mm
Material	Polypropylene (PP)
Structure	Pull-tight, progressive self-locking, integral clip + tear-off tab
Breaking strength	F ≥ 300 N
Marking	Laser engraving: serial no., barcode, QR, logo
Weather resistance	Anti-UV, anti-corrosion
Colors	Red, blue, black, green (custom on request)
Application	Hand pull-tight, self-locking
Removal	Hand tear at break point (no tools) or cut with scissors/cutter

Typical Applications

Mail bags, courier pouches, cash/coin bags, ATM cassettes;

tote boxes, roll cages, storage cabinets, fire-extinguisher pins;

truck/trailer doors (secondary indicative seal), inland containers, railway boxes;

hospital carts, airline catering trolleys, retail replenishment crates.

Customization

Laser print: company name, 6–12 digit consecutive number, Code 128 / QR

Color: standard 4 colors or custom RAL/Pantone

Packing format per buyer requirement (common peer pack: 100 pcs/bag, 1000–2500 pcs/ctn)

S306 Indicative Plastic Seal – PP, 375 mm, 30×20 mm laser flag, pull-tight F=300 N, hand tear-off easy-open, anti-UV, red/blue/black/green, for bags/boxes/totes/truck doors.