Plastic Seal (Other key words: Pull Tight Security Seals, Metal / Lead Seal, One-time Lock Seals)
Appl ication:

Containers, Trucks, Electric / Water Meters, Tanker Valves, Vehicle Doors, Wheel Chairs, Distribution Boxes, Telecommunication, Postal services, Courier Services and Bags, etc. 
Structure Features:
1. One piece plastic pull through strap seal.
2. Standard overall length: 200 or 300 mm, can be supplied in other desired length.
3. Maximum protection against pilferage, tampering, adulteration, theft.
4. No tool required for installation, simply push / pull the plastic tail through the hole in body to lock.
5. The lock body can be used as a label carrier.
6. Pull tight locking mechanism.     

http://www.rcssco.com/