Locking format
Confirm the locking format on the model drawing and sample.
MC-JY418D / PULL-TIGHT PLASTIC SEAL, DOUBLE LOCK
Pull-tight polypropylene seal with two metal clips (double lock): 418 mm overall, 46 × 29 mm flag. The second clip adds a backup grip on the tail. Catalogue tensile 15–20 kg; MOQ 1,000 pieces.
Price and delivery timing are confirmed against your quantity, colors and print requirements.
PRODUCT OVERVIEW
MC-JY418D is a single-use, pull-tight seal with two metal clips in the head – a double lock that grips the tail at two points. It is 418 mm (16.5 in) long with a 46 × 29 mm flag. Feed the tail through the head and pull tight; both clips engage. The catalogue lists 15–20 kg tensile. MOQ is 1,000 pieces.
The tail passes one way through two metal clips in series; if one clip is forced, the second still holds.
Quantity, color, marking (logo, serial, barcode) and destination.
Confirm the locking format on the model drawing and sample.
Polypropylene (PP) with two metal locking clips
Specify artwork and identifier requirements so the print method and available marking area can be confirmed.
TECHNICAL DATA
| Model | MC-JY418D |
|---|---|
| Seal type | Pull-tight plastic seal, double lock |
| Material | Polypropylene (PP) with two metal locking clips |
| Total length | 418 mm (16.46 in) |
| Catalogue tensile value | 15kg-20kg |
| MOQ | 1,000 pieces (catalogue). |
| Lead time | Confirmed after quantity, color, artwork and destination are reviewed. |
| Flag size | 46 × 29 mm (drawing) |
| Locking | Two metal clips in series |
| Tensile strength | 15–20 kg (catalogue) |
| Removal | Scissors or cutter |
| Catalogue pages | 26 |
Catalogue source: MANCHAO 2024, PDF pages 26. Reported value: 15kg-20kg. Test method and minimum guaranteed force are not established by this entry; confirm model-specific test evidence before specifying a required rating.
Source: MANCHAO Security Seal Catalogue 2024, PDF pages 26. Company printing services confirmed October 2026. Model-specific claims require supporting evidence.
DIMENSION REFERENCE

Check the original dimension drawing and your closure openings before ordering.
APPLICATION CHECK
Catalogue-listed uses: containers, logistics, airline, garden and bags. The double lock suits roll cages, trolleys and courier sacks where you want a backup grip without moving to a cable seal. Images are product photos and the original catalogue drawing.

Thread through the zipper pull and adjacent anchor eyelet, then lock and record the identifier. Check both openings, loop clearance and seal engagement on a sample.
AI-generated application illustration; confirm closure fit with a sample.MARKING & COLORS
Catalogue marking: custom logo, sequential numbers, letters and barcode on the 46 × 29 mm flag. MANCHAO offers laser marking, screen printing, UV printing and hot stamping on plastic surfaces; the process is confirmed on a production sample against your artwork, serial format and barcode size. Catalogue colors: white, yellow, red, blue, green, orange or custom.
Fine logo, text and serial identification; contrast depends on the seal color and material.
Solid-color logos and text; artwork and color matching are approved before production.
Color artwork and identification; layout and surface adhesion are checked on a sample.
Foil-transfer text and logos; confirm foil color, marking area and artwork.

White, yellow, red, blue, green, orange; custom colors on request
INSTALLATION & INSPECTION
1. Pass the tail through the closure (bag neck, cart handles, hasp or door handles). 2. Feed the tail through the locking head in the arrow direction. 3. Pull until tight; check that it cannot be pulled back. 4. Record the serial number. 5. Remove with scissors or a cutter. Single-use; do not reapply.
PACKING & ORDERING
Not stated in the catalogue; bag and carton quantities are confirmed with the quotation.
Send your quantity, destination, chosen colors and print requirements. Confirm samples, current packing and delivery terms before placing an order.
PRODUCT DOCUMENTS
BUYING QUESTIONS
The head contains two metal clips that grip the tail at two points, so the seal still holds if one clip is forced.
Both are 418 mm double-lock seals. MC-JY418T adds a hand-tear release for tool-free removal; MC-JY418D is removed with a cutter.
The catalogue lists 15–20 kg tensile.
1,000 pieces. Packing is confirmed with the quotation.
Yes. MC-JY418D can carry a logo or company name, text and sequential serial numbers, and a barcode where the marking area allows. Plastic surfaces are laser marked, screen printed, UV printed or hot stamped, and the process, position and readability are confirmed on a production sample. The 46 × 29 mm flag leaves room for a logo, serial number and barcode.
Pass the tail through the closure, feed it through the locking head in the arrow direction and pull until tight; both metal clips engage. Record the serial number. Remove MC-JY418D with scissors or a cutter; it is single-use and cannot be refitted.
MC-JY418D / START YOUR ENQUIRY
Tell us your quantity, colors and marking requirements.