Black heat shrink wrap bands seals are a type of tamper-evident packaging that are used to secure the lids and closures of various items such as jars, bottles, and other containers.
They are typically made of a clear plastic, and are applied around the lid or closure of a container. The custom shrink bands are then heated, which causes it to shrink tightly around the container and create a secure seal. This seal helps to protect the product from contamination and tampering, as well as provide visual evidence that the product has not been opened.
The black color of the heat shrink warp band helps to make the product more aesthetically pleasing and also helps to indicate that the container has not been opened.