Dynamic Sealing continues to be a leading supplier of large custom rotary union assemblies to the energy sector. The design shown has (6) passages with 2" flow channels. It was designed to transfer hydraulic fluid at 5000 psi while rotating at up to 20 RPM. It is designed to operate outdoors in extreme environments, with temperatures ranging from -40° F to 130°F. It is pictured with their stand... (read more)

DSTI's latest design offers a unique solution for demanding hydraulic fluid applications. These rotary unions are used to transfer hydraulic fluid to multiple stations on a rotary punch press machine. (read more)

Rotary Systems designs and manufactures a line of standard and custom over-the-shaft rotary unions. The standard rotary unions shown are constructed from carbon steel and utilize a precision ground shaft, radial ball bearings and Teflon seals. This is a two passage rotary union with 1/4" NPT passages with a 1/2", 1.5" or 2.0" inch bore through the shaft. (read more)

Rotary Systems' custom twelve passage rotary union is manufactured from carbon steel. This union utilizes a hardened and precision ground shaft, Teflon seals and radial ball bearings. The connections are .250" NPT threads. This unit is available for pneumatic, hydraulic or water service. (read more)

DSTI is a leading provider of large scale rotary union assemblies for hydraulic systems. The 6-passage unit pictured was designed for offshore use in the energy sector. It is used to transfer hydraulic fluid to rotating equipment. The two main fluid channels are designed for flow rates of 800 GPM under typical service conditions. Their 5" diameter flow passages have ISO 6164 flange connections.... (read more)

DSTI offers custom single and multiple passage rotary unions for high speed service (read more)

The custom rotary union assembly shown is a stock 2 passage rotary union to pass air with an integrated electrical slip ring rated for high amperage/voltage power circuits to run a motor. (read more)

Rotary Systems' three passage rotary union with integrated slip ring. Rotary Systems is capable of integrating a slip ring into our line of stock rotary unions as shown in the picture. This is designed into our unions to allow for continuous 360 degree rotation of electrical power, signal and data transfer. Multiple circuits and power capacities are available. (read more)

Four passage rotary union with integrated 36 circuit slip ring. Rotary Systems is capable of integrating a slip ring into our line of stock rotary unions as shown in the picture. This is designed into our unions to allow for continuous 360 degree rotation of electrical power, signal and data transfer. Multiple circuits and power capacities are available. (read more)

DSTI offers many custom rotary union designs for feeding medias directly into rotating shafts. The experienced Engineering staff will design a custom rotating union to fit a specific shaft size; large diameter versions are available. (read more)