Vent packaging seals are even more specialized components that work to balance pressure on the inside and outside of sealed containers while also keeping harmful leaks out and environmental contaminants away. These seals are essential for packaging that will be transported and stored in a way where altitude, temperature or pressure changes (which could be the case for many packaged goods). This allows packaged goods vent packaging seals facilitating controlled gas exchange, preventing containers from bulging (as pressure outside is lower than inside), and collapse when the opposite occurs (high pressure inside). Typically found in the packaging of industrial chemicals, cleaners, agricultural products and household chemicals to protect the container and its contents.