Rotary Joint manufactured by Ningbo Pneumatic Technical Expert Co., Ltd. supplies air to two different rotating objects from single stationary supply. It is also known as rotatory union or rotating union. The joint allows the supply of different medias in or out of rotating machine or tool. The media can be of any form like ; steam, water, thermal oil, coolant, air, etc. Rotary Joint is used to cool down or heat up various processing units. It is also used in winding or injecting molding applications. These joints have shaft which keeps roatating with threads on one end which connects to a revolving roller, or other rotating equipment.