* Tiger seals are often used as a term to describe a type of seal used in packaging. These seals can be made from different materials and have different properties depending on the product they're used to seal.
* It's possible, though less likely, that "tiger seal" could refer to a specific type of animal. However, there's no recognized animal species with this name.
To get a clearer understanding, you'll need to provide more context. Where did you encounter this term?