We V.K. Engineering Works Company are leading Manufacturers, Suppliers, Providers, Exporters, Dealers, Traders of Hydraulic Rotary Union. A rotary union is the fitting used to transfer the pressurized fluid from a fixed inlet to rotating outlet, without obstructing the flow of the fluid or air. A rotary seal between the two halves contains the pressurized fluid, yet allows relative rotation between the halves. On an excavator, rotary unions allow hydraulic fluid to be transferred between the cab and track base while continuously rotating 360 degrees. The fluid supplies the track drive system allowing the excavator to move. A rotary joint, also referred to as a rotary union or rotating union, is a rotary sealing device that connects rotating equipment to fixed piping for the transfer of steam, water, thermal oil, coolant, hydraulic oil, air, and other media.