Rotary Unions SE Series

SE Series 4-Passage Rotary Unions & Joints

SE Series 4-Passage Rotary Unions & Joints
Maximum Pressure See Other Pressure Options
Maximum Speed See Other Speed Options
Connection Type See Other Connection Options
Suitable Media See Other Media Options

DSTI 4-passage SE Series rotary unions feature four independent flow passages and are designed for applications with high pressure requirements and tight spatial constraints.

SE 4-passage models come standard with threaded connections on the sides of the shaft and housing. Models are also available with optional shaft O-ring glands for face/flush mounting (which must be specified when ordering).

Need to combine fluid with electrical power, signal and/or data transfer? No problem. The SE Series rotary unions are designed to integrate directly with our standard electrical slip rings. See options.

Available Configurations

Part # Connection Passage Size Diameter Length Through Bore Min. Torque* Part Downloads Information
SE-1141 [SEM-1141]#4 SAE [G1/8"-28 BSPP]0.187" [4.75 mm]2.937" [74.6 mm]4.828" [122.631 mm]0.375" [9.525 mm]38 in-lbs [4.29 Nm] Get Quote

*Minimum torque required to rotate based on zero pressure.

Technical Specifications

Maximum Pressure 7,500 PSI [515 BAR]
Maximum Speed 300 RPM
Maximum Vacuum 30 HG
Temperature Range 0° F to 220° F [-18° C to 105° C]
Suitable Media Air/Gas, Oil
Connection Type SAE, BSPP
SE Series Rotary Unions - Housing Material
Housing: Material (Plating/Coating) Carbon Steel (Black Oxide)
SE Series Rotary Unions - Shaft Material
Shaft: Material (Plating/Coating) Carbon Steel (Black Oxide)
SE Series Rotary Unions - Shaft Flange Mount
Optional Interface Mounting Shaft Flange Mount
SE Series Rotary Unions - Housing Flange Mount
Optional Interface Mounting Housing Flange Mount
Shaft Connection Options Side & Face/Flush Mounting
  • 1Side Threaded Connections (Standard)
  • 2Optional Face/Flush Mounting Connections (Not Threaded)
  • 3Threaded Mounting Holes

All values listed under Technical Specifications are dependent on a combination of all application parameters. Please note operational life is dependent upon both rotational speed and duty cycle. Contact DSTI if your application requires operating close to the maximum rotational speed with a continuous duty cycle. Applications with temperatures above 220° F (105° C) require alternative seal materials. Please consult with DSTI regarding your specific application requirements.

Available Options

Available Custom Modifications for SE Series Rotary Unions

Custom Modifications

Easier and less expensive than you may think. We can modify our standard products to fit your project requirements.

Learn More
Electrical Slip Rings for SE Series Rotary Unions

Electrical Slip Ring Integration

Get the complete package. We offer a wide range of electrical slip rings designed to directly integrate with our SE Series rotary unions.

View Options


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