Available from Deublin Company
Rotating Unions (also known as rotary swivels, rotary couplings, rotary joints) are precision mechanical devices used to transfer fluid from a stationary source, such as a supply pipe, into a rotating piece of machinery. A typical rotating union features:
Ball bearings to support the rotating component (attached to the machinery) against the stationary component (attached to the stationary supply source)
Mechanical seal to seal the media passing through the rotating union
Mechanical seal face materials and secondary seals will vary depending upon the fluid properties & operating conditions of the application. Likewise, bearing type, design, material & construction will also vary with application.