About Deublin

DEUBLIN is a leading manufacturer of rotary joints in the field of industry and renewable energy sources.

A rotary joint is a mechanical device that allows fluid under pressure to be transferred from a stationary source to rotating parts of devices such as cylinders, cylinders, tables, spindles or drives for the purpose of heating, cooling or transmitting hydraulic power.

Based on several decades of experience in performing demanding rotary joint applications, Deublin has also developed electric slip rings that include operation in demanding environments. Long-lasting slip ring technology ensures constant and reliable operation without the need for maintenance.

All Deublin products are 100% tested before being offered to customers and are manufactured using state-of-the-art manufacturing processes.

Deublin products are present in different industries:


Rotating unions for air and hydraulic

  • For air and hydraulic oil service
  • Mono flow design
  • Self-supported rotating union
  • Radial housing connection
  • Balanced mechanical seal: Carbon Graphite/hardened Tool Steel or Carbon Graphite/Ceramic
  • Felt oiler in seal cavity for air service
  • Oiler for re lubrication (3 - 5 drops/month)
  • Low torque
  • Weight optimised design
  • Aluminium housing
  • Stainless steel or steel rotor (respective of model)

Rotating Unions for Water

  • 57 Series with silicon carbide seals for water service
  • 55 Series for General Purposes
  • Mono flow and duo flow design
  • Self-supported rotating union
  • Radial housing connection
  • Balanced mechanical seal
  • Pinned rotor seal
  • Easy and quick replacement of sealing components (rotor seal, floating seal)
  • Ball bearings lubricated for life
  • For poor water quality
  • 3 vent holes
  • Forged brass housing
  • Stainless steel rotor
  • Special options: threaded vent holes, bearings splash proof, nickel-plated versions

Rotating Unions for Coolant

  • "POP-OFF" for coolant service with dry-run capability
  • Mono flow design
  • Self-supported rotating union
  • High-wear resistant balanced mechanical seal: Silicon Carbide/Silicon Carbide
  • During pressure less operation an unlimited run without media is guaranteed by seals that "pop" apart ("POP-OFF")
  • High-precision angular contact ball bearings in an X-arrangement
  • 902 series with deep-groove radial ball bearings
  • Effective labyrinth system and large vents protect bearings
  • Full-media flow
  • Anodised aluminium housing
  • Stainless steel rotor
  • Dry-run under pressure less condition only

Rotating Unions for water in continuous casting plants

  • For Water service at continuous casting steel plants
  • Mono flow and duo flow design
  • In-the-shaft mounted rotating union
  • Flanged housing or mounted with retaining plates
  • High-wear resistant balanced mechanical seal Silicon Carbide/Silicon Carbide
  • Brass housings and elbows
  • Stainless steel rotors and supply pipes
  • For poor water quality
  • Long composite bearing
  • Bearing protected by O-ring
  • Full-media flow

Rotating Unions for Steam

  • For Steam or Hot Oil Service
  • Mono flow and duo flow design
  • Self-supported rotating union
  • Designed for steam and hot oil applications in paper, plastics and textile industries
  • Effective on a variety of applications, especially on open gear paper machines
  • Pressurised spherical carbon graphite seal
  • Ni-Resist counterface
  • Two widely spaced graphite bearings
  • H57 - H127 optional with sight glasses in the end cap for visual inspection of condensate removal
  • Seal wear indicator allows preventive maintenance
  • Flanged or threaded rotor available
  • Cast iron housing
  • Steel rotor

Rotating unions for high pressure and/or high speed

  • For water or hydraulic oil service
  • Mono flow design
  • Self supported rotating union
  • Designed for high media pressure and high RPM
  • Seals made of Tungsten Carbide
  • Double row ball bearing, lubricated for life (excluding ZAP)
  • Vent holes
  • Steel housing
  • Stainless steel end cap and rotor
  • All parts in media contact are stainless steel and corrosion resistant


Can't find a suitable product in the Deublin range? Together with Deublin, we can offer the development and manufacture of special custom rotary joints to suit your specific needs. The design of custom-made rotary joints can vary from small modifications of existing components to the complex design of completely new rotary joints.

Contact us and we will help you develop custom-made rotary joints to suit your needs.

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