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Rotary Unions are also referred to as:

  • Rotating Unions
  • Rotating Joints
  • Rotating Couplings
  • Rotating Swivels
  • Hydraulic Swivels
  • Rotary Joints
  • Rotary Couplings
  • Hydraulic Couplings
  • Rotary Swivels
  • Swivel Joints
  • Fluid Swivels
  • Swivel Unions

SE 12 Passage Rotary Union

The SE Series 12 Passage rotary unions are suitable for hydraulic, coolant, pneumatic and vacuum applications. All SE series unions are designed to offer o-ring face or female SAE-4 connections on the shaft for increased mounting flexibility. In order to minimize space requirements, the 12 Passage SE Series rotary union features a compact two-stage housing design.

SE 12 Passage Rotary Union

part # thru bore overall diameter overall length min torque* passage size slip ring option download
SE-111210.3753.43710.0001600.187PDF CAD

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

Max. Pressure¹7500 PSI (515 BAR)
Max. Vacuum¹30 HG
Max. Rotational Speed¹up to 300 RPM
Max. Temperature¹350° F (176° C)²

¹Values are dependent on application parameters. Please consult with DSTI.
²High temperature applications may require alternative seal materials. Please consult with DSTI.

Connection SizesSAE-4. 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 "-NP" to the part number. Example: SE-1121-NP

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

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