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.

LT Series Rotary Unions

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LT Series Catalog

The LT Series rotary unions / rotating joints are small and lightweight available in 2, 4, 8, 12 & 24 passage versions. The LT Series rotary unions / rotating joints feature all-aluminum construction and low-torque seals that are suitable for pressure or vacuum use.

2 Passage

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4 Passage

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8 Passage

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12 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
LT-2121	0.375	2.187	2.596	3	0.156	View Model
LT-2321	0.375	3.437	4.624	8	0.375	View Model
LT-2141	0.375	2.187	3.314	4	0.156	View Model
LT-2341	0.375	3.437	6.284	12	0.375	View Model
LT-2181	0.375	2.187	4.746	5	0.156	View Model
LT-2381	0.440	3.437	9.610	18	0.375	View Model
LT-21121	0.375	2.187	6.806	8	0.156	View Model
LT-23121	0.440	4.438	14.070	32	0.375	View Model
LT-21241	0.375	3.438	13.950	20	0.156	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	600 PSI (40 BAR)
Max. Vacuum¹	30 HG
Max. Rotational Speed¹	up to 500 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.

Performance Data: Pressure vs Speed (Continuous)

This data is to be used as a general guideline. Please consult DSTI about your specific application.

LT-21xxx Series

LT-23xxx Series

Performance Data: Pressure vs Torque

This data is to be used as a general guideline. Please consult DSTI about your specific application.

*Torque data based on all passages (ports) pressurized.

LT-21xxx Series

LT-23xxx Series

Connection Sizes	1/8" & 3/8" - Other sizes available upon request.
Connection Type	NPT, Rc BSPT, O-ring Face Seal
Plating and Coatings	Body Material Type: Aluminum Shaft: E-Nickel Housing: Blue Anodize
Mounting Options	Tapped holes are provided on both the housing and shaft for mounting the assembly. Available Aluminum flange can be bolted onto the end of the housing assembly for optional electrical slip ring mounting. The flange can also be bolted to the shaft end for additional mounting configurations. To request this option add -F to end of product part number.
Slip Ring Options	The LT Series unions are available with a number of Electrical 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.
Media Types	Coolant, Gases, Oil, Steam¹, Water
Seal Type	PTFE Filled Nitrile O-Ring (Alternative seal types available. Please consult with DSTI)
O-ring Face Seal Options	O-ring face seal options available for all LT Series models. Please add "-OF" to the part number. Example: LT-2121-OF

¹High temperature applications may require alternative seal materials. Please consult with DSTI.

Note: O-ring face seal options are available for face-mounting a LT Series rotary union. Please add "-OF" to the part number --- Example: LT-2121-OF. For questions, please consult DSTI.

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