Rotary joint accessories · Flexible hose · ½″ NB to 6″ NB+

Flexible Hose — precision-engineered for rotary joint installations

In any rotary joint installation, the connection between the joint and the fixed plant pipework carries as much responsibility for reliable service as the joint itself. A rigid connection transfers stress directly onto the rotary joint body and its seal faces, shortening service life. The flexible hose is the component that removes this stress from the equation.

½″ NB – 6″ NB+
Braided stainless steel
Steam, thermic fluid, air & water
Construction
Braided stainless steel
Size range
½″ NB to 6″ NB+
Materials
SS304 standard, SS316 available
Media
Steam, thermic fluid, air, water
Why the connection matters

A rigid connection puts the stress on the joint, not the pipework

A rigid pipe connection cannot accommodate the small misalignments, vibration, and thermal movement that are unavoidable in real installations — and forcing a rigid connection to absorb this movement transfers stress directly onto the rotary joint body and its seal faces, shortening service life and increasing the risk of leakage or premature failure. We manufacture flexible hoses in braided stainless steel construction, sized to match standard rotary joint port connections, rated for steam, thermic fluid, compressed air, and water service across textile, paper, packaging, and general process industries.

What is a flexible hose?

Controlled flexibility at the connection point

A flexible hose is the connecting element fitted between a rotary joint's port connection and the fixed pipework of the plant or machine.

Flexible hose absorbing misalignment between the rotary joint and fixed pipework
  • Misalignment

    Between the rotary joint centre-line and the fixed pipe run, which is rarely perfectly concentric in a real installation.

  • Vibration absorption

    From the rotating machine, preventing vibration from transmitting into the pipework and vice versa.

  • Thermal expansion & contraction

    As the system heats and cools between start-up, running, and shutdown conditions.

Without a flexible connection, these movements are absorbed by the rotary joint's seal faces and bearing arrangement instead — accelerating wear and increasing the likelihood of unplanned maintenance.

Construction

Three functional layers, matched to the application

Each flexible hose is built from three functional layers, matched to the pressure, temperature, and mechanical conditions of the application.

Corrugated inner tube

A stainless steel bellows-form tube that provides the pressure boundary and the flexing action itself, available in annular or helical corrugation depending on the flexing and pressure requirement.

Braid reinforcement

A single or double layer of stainless steel wire braid over the corrugated tube, carrying the pressure thrust load and protecting the corrugated tube from mechanical damage and kinking.

End fittings

Threaded (BSP or NPT) or flanged connections at each end, matched to the rotary joint port and the plant pipework, welded to the hose assembly and pressure-tested before despatch.

Material options

SS304 as standard, SS316 for aggressive media

We manufacture flexible hoses in stainless steel, with the grade selected to suit the operating conditions.

Standard material

Stainless Steel 304

Stainless steel 304 is the standard construction for flexible hoses in the majority of steam, thermic fluid, and water applications, offering reliable corrosion resistance, good weldability, and long service life under normal industrial operating conditions.

For demanding conditions

Stainless Steel 316

Where the application involves more aggressive media, chemically treated condensate, or higher corrosion risk, stainless steel 316 construction is available, providing improved resistance to pitting and chloride attack for demanding process and marine-adjacent environments.

Applications

Wherever a rotary joint connects to fixed plant pipework

Flexible hoses are used wherever a rotary joint connects to fixed plant pipework.

Textile industry

Calendering machines, drying cylinders, and heated rollers in fabric processing and finishing lines.

Paper & printing industry

Dryer section cylinders in paper machines and heated impression cylinders in printing equipment.

Packaging industry

Heated laminating and drying rollers.

Rubber & plastics industry

Heated calendering and embossing rolls.

General process industry

Any rotating heat-transfer or fluid-handling equipment fitted with a rotary joint.

Size range & specification

Confirmed against the rotary joint at time of order

Flexible hoses are manufactured to match standard rotary joint port sizes, from ½″ NB for compact spindle and small-bore rotary joints up to 6″ NB and above for large paper machine and process cylinder installations.

Parameter & rating

Size range½″ NB to 6″ NB and above
Inner tubeCorrugated stainless steel, annular or helical
ReinforcementSingle or double stainless steel wire braid
End fittingsThreaded (BSP / NPT) or flanged, welded & pressure-tested
Standard materialStainless steel 304
Alternative materialStainless steel 316 — aggressive / corrosive media
MediaSteam, thermic fluid, compressed air, water
Part of a complete rotary joint system

Single-source accountability for the entire installation

A flexible hose does not work in isolation — it is one component in a complete rotary joint installation that includes the joint itself, mounting hardware, and, where applicable, the syphon elbow and syphon pipe for condensate removal. As a manufacturer of rotary joints and all related accessories, we are uniquely placed to supply not just the flexible hose but every component in the assembly — ensuring compatibility, consistent quality, and single-source accountability for the entire system. Whether you need a direct replacement hose for an existing installation or components for a new rotary joint system, we can supply the correct size, material, and end connection to match your requirements.

Need a flexible hose matched to your rotary joint?

Contact the Carbon Rotofluid technical team to place an order, confirm sizing, or request technical guidance on flexible hose selection for your rotary joint system.