A rotary union (rotary joint) transfers fluid media — hydraulic oil, coolant, water, air, steam — from a stationary source into rotating equipment without leakage or hose wrap. The right union disappears into your machine; the wrong one becomes a maintenance item.

TAP helps you specify seal materials, passage counts, pressures, and speeds so the union you install is the last one you think about.

Typical applications

  • Hydraulic swivels on slewing equipment
  • Coolant delivery through rotating spindles
  • Multi-passage unions for combined media and electrical slip rings
  • Air and water service on rotating drums and reels

Industries served

  • Construction Equipment
  • Machine Tools
  • Oil & Gas
  • Packaging & Converting
  • Material Handling

Why buy through TAP

More than a purchase order

Media, pressure, and speed review to get sealing technology right the first time.

Multi-passage and custom configurations coordinated directly with the factory.

One contact for the union and the slewing components it serves.

Working on a rotary solutions application?

Send us the requirements — loads, environment, quantities, timeline — and we’ll respond with real engineering input, not a form letter.