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How To Buy

Rotary Unions and Swivel Joints

A rotary union (or rotary joint or swivel union) is a device that provides a rotating seal between two parts. It rotates 360 degrees on an axis or swivels part-way if full rotation is not required. This allows fluid to flow from a stationary source, like a pipe, to a rotating part or machine, such as a drum. This mechanism is used in a wide range of industries, from agriculture to plastics, so it needs to be extremely versatile.

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DNRU-300
DNRU-HPMC_HSMC
DNRU-9000G
DNRU-500

Featured Brands

With a family of trusted global brands, Columbus McKinnon products leverage our company’s rich history
of industrial manufacturing to revolutionize the future of lifting and motion control.

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Featured Products

300 Series

General Purpose Rotary Unions

By: Duff-Norton

Media: Water, Air
Pressure: 117 psi
Temperature: 250°F

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dnru-dwa

DWA Series

General Purpose Rotary Unions

By: Duff-Norton

Media: Water, non-corrosive fluids
and oils
Pressure: 200 psi
Temperature: 158°F

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dnru-hpmc_hsmc

HPMC/HSMC Series

Multi-Port Rotary Unions

By: Duff-Norton

Media: Water, Air, Hydraulic Fluid
Pressure: 170 psi (HSMC), 5,880 psi (HPMC)
Temperature: 248°F

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dnru-1600

1600 Series

Multi-Port Rotary Unions

By: Duff-Norton

Media: Water, Air, Hydraulic Fluid
Pressure: 2,900 psi
Temperature: 250°F

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dnru-2000

2000 Series

Steam & Hot Oil Rotary Unions

By: Duff-Norton

Media: Water, Hot Oil, Air
Pressure: 150 psi (W), 100 psi (Air, HO)
Temperature: 392°F

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dnru-9000g

9000G Series

Steam & Hot Oil Rotary Unions

By: Duff-Norton

MEDIA: Water, Steam, Hot Oil
PRESSURE: 250 psi (W), 175 psi (S), 100 psi (HO)
TEMPERATURE: 600°F

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dnru-1100

1100 Series

Swivel Joints

By: Duff-Norton

Media: Air, Water, Hydraulic Fluid
Pressure: 725 psi
Temperature: 392°F

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dnru-1300

1300 Series

Swivel Joints

By: Duff-Norton

Media: Air, Water
Pressure: 290 psi
Temperature: 392°F

View Details

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