THE sinkers to seal made of plastic colored green have been produced by exactly reproducing traditional lead sinkers. These seals can also be used with: traditional spiral, safety spiral, customs twine, traditional twine. The closing guarantee of plastic sinkers is obtained using the appropriate caliper. In addition to being a valid guarantee seal for fire extinguishers or first aid kits, they have a notable decorative function in the food and cosmetic sectors. In the latter field we can produce them both in silver, bronze and even golden colour. THE sinkers they are made of polystyrene with colors compliant with the European Directive 2002/EC "Restriction of Hazardous Substances (RoHS)". Furthermore, the products do not contain any of the following substances: Cadmium, Lead, Mercury, Hex.