An oxygen tank is a container that stores oxygen gas under high pressure. It is commonly used in medical settings to provide supplemental oxygen to patients who have difficulty breathing. The tank is equipped with a regulator that controls the flow of oxygen, allowing for safe and precise delivery. In addition to medical use, oxygen tanks are also utilized in various industries, such as welding and scuba diving. In welding, they supply oxygen to support combustion, while in scuba diving, they provide divers with breathable air underwater. Proper handling and storage of oxygen tanks are essential for safety.