SE Series Rotary Unions

The SE Series rotary unions / rotating joints are designed for applications with high pressure requirements and limited space. All SE series unions offer SAE-4 and o-ring flange connections. Originally designed for machine tool work holding applications, these versatile unions are currently used in a number of industries. The SE Series rotary unions / rotating joints are available in 2, 4, 6, 8, 12, 16 & 24 passage versions and incorporate DSTI’s exclusive DynaSeal™ seals, which are suitable for vacuum & bidirectional pressures up to 7500 psi.

2 Passage

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4 Passage

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6 Passage

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8 Passage

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12 Passage

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16 Passage

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24 Passage

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Specifications
Operating Info
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part #	thru bore	overall diameter	overall length	min torque*	passage size
SE-1121	0.375	2.937	3.562	30	0.187	View Model
SE-1141	0.375	2.937	4.828	60	0.187	View Model
SE-1161	0.375	2.937	6.094	80	0.187	View Model
SE-1181	0.375	2.937	7.360	90	0.187	View Model
SE-11121	0.375	3.437	10.000	160	0.187	View Model
SE-11161	0.375	4.437	13.700	40	0.187	View Model
SE-11241	0.375	4.437	21.970	80	0.187	View 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. Pressure¹	7500 PSI (515 BAR)
Max. Vacuum¹	30 HG
Max. Rotational Speed¹	up to 300 RPM
Temperature Range¹	0° 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 Coatings	Black oxide
Materials	Carbon steel
Mounting Options	Tapped holes are provided on both the housing and shaft for mounting the assembly.
Mounting Flange	Available Steel flange can be bolted onto the shaft end of the assembly for optional o-ring face mounting.
Slip Ring Options	The 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 Options	O-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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