Plastic Seal (Other key words: Pull Tight Security Seals, Metal / Lead Seal, One-time ... Bags, etc. Structure Features: 1. One piece plastic pull through strap seal. 2. Standard overall length: 200 or ... , theft. 4. No tool required for installation, simply push / pull the plastic tail through the hole in body to lock ... be used as a label carrier. 6. Pull tight locking mechanism. http://www.rcssco.com/