Spray gun swivel joint is a precision component specially designed for high-pressure spray guns. Its internal components are precisely machined and include high-quality ball bearings or sliding bearings to ensure smooth 360 degree rotation and avoid jamming or wear during operation. The swivel joint of the spray gun is designed based on fluid dynamics, allowing high-pressure water flow to pass through the rotating part without obstruction while maintaining sealing. The sealing ring and bearing system inside the joint effectively prevent leakage and pressure loss, ensuring stable and continuous water flow. Its design makes the hose less prone to entanglement and bending, thereby reducing fatigue during operation and extending the service life of the spray gun hose and rotary joint itself. This type of swivel joint is widely used in various high-pressure cleaning and industrial fields. It is suitable for cleaning vehicles, building exterior walls, ships, and maintenance work of industrial equipment. Due to its durability and flexibility under conditions, spray gun rotary joints are also commonly used in the petrochemical, food processing, and manufacturing industries.