Rotary Union Products


Electrical Slip Ring Products


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  • Our rotary union products provide options for both single and multiple passage designs capable of handling different media types simultaneously.

  • From our standard rotary union products to our custom designed solutions, our engineers will help you find a solution that meets your exact specifications.

SE 4 Passage Rotary Union

The SE Series 4 passage rotary unions are suitable for hydraulic, coolant, pneumatic and vacuum applications. All SE series unions are designed with both o-ring face and female SAE-4 connections on the shaft for increased mounting flexibility. High quality DynaSeal™ seals used in all the SE Series products can be run “dry” and are suitable for low and high pressure use.

SE 4 Passage Rotary Union

part # thru bore overall diameter overall length min torque* passage size slip ring option
SE-11410.3752.9374.828600.187View Model

All dimensions are shown in inches. Click here to convert to Metric

*This is the minimum torque required to rotate based on zero pressure measured in inch-pounds


Standard electrical slip ring options available.

Max. Pressure¹7500 PSI (515 BAR)
Max. Vacuum¹30 HG
Max. Rotational Speed¹up to 300 RPM
Temperature Range¹0° F to 220° F (-18° C to 105° C)²

¹Values are dependent on a combination of all application parameters. Please consult with DSTI.

²Applications with temperatures above 220° F (105° C) require alternative seal materials. Please consult with DSTI.

Connection Sizes#4 SAE - Other sizes available upon request.
Plating and CoatingsBlack oxide
MaterialsCarbon steel
Mounting OptionsTapped holes are provided on both the housing and shaft for mounting the assembly.
Mounting FlangeAvailable Steel flange can be bolted onto the shaft end of the assembly for optional o-ring face mounting.
Slip Ring OptionsThe SE Series unions are available with a number of RotaRing™ slip ring options for power, signal and data transfer. The assembly is available with an aluminum cover to protect the slip ring during use in demanding environments.
O-ring Face Seal OptionsO-ring face seal options available for all SE Series models. Please add "-OF" to the part number. Example: SE-1121-OF

Note: O-ring face seal options are available for face-mounting a SE Series rotary union. Please add "-OF" to the part number --- Example: SE-1121-OF. For questions, please consult DSTI.

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