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ROTARY UNION ® transfers media (water, steam, air, oil, hydraulic fluid, etc) from a stationary source to rotating machinery, such as a drum or an indexing table. They are used in process industries such as; paper, printing, rubber and plastics, textile and chemical. Rotary Unions are also used on cranes, machine tools and many other applications. Duff-Norton Rotary Unions are used to provide heating or cooling media like steam, hot oil, water or coolant to control the surface temperature of a drum or roll, to transfer air or hydraulic fluid to moving components or to add fluids to mixers while in motion. Rotary unions, rotary joints and rotating joints ranging up to 750 psi and up to 5,000 RPM are available.

Water, Air

290 PSI


392º F


2" to 12" Flange

Nickel Plated Steel

Features & Benefits
  • Swivel Applications - Used in applications where slow rotation or swiveling motion is needed
  • Flanged Swivel Design - Allows for stability in high flow applications
  • GR Seal Technology - Design features include a ball bearing for rotation, and a GR seal for superior sealing performance
  • High Temperature Applications - Can be used in applications with temperatures up to 392º F