Chest seals are vital medical devices used to treat open chest wounds, such as gunshot or stab wounds. Designed to prevent air from entering the chest cavity, they help maintain normal breathing and prevent conditions like tension pneumothorax, a potentially life-threatening situation where air trapped in the chest compresses the lungs and heart. Chest seals are typically adhesive, sterile, and often feature a one-way valve that allows air and blood to escape while preventing anything from entering. Essential for military, law enforcement, and emergency medical personnel, chest seals are a critical component of any trauma or first aid kit, ensuring rapid and effective treatment in the field.