The High Temperature Rotary Union is a specialized industrial component engineered to facilitate fluid transfer in systems exposed to extreme thermal conditions. Constructed with heat-resistant alloys and advanced sealing technologies, this rotary joint ensures reliable performance at temperatures up to 650°C (1202°F)—ideal for applications in steel manufacturing, glass processing, and petrochemical refining. Unlike standard unions, its thermal expansion compensation design minimizes stress fractures and leakage in high-heat operations.
Operates efficiently from -20°C to 650°C (-4°F to 1202°F), with custom models for 800°C+ environments; Capable of operating at temperatures up to 300°C (572°F), suitable for steam, hot oil, and thermal fluids used in drying, heating, and calendering processes.
Inconel 625, Hastelloy C-276, or ceramic-composite materials for oxidation resistance.
Up to 2800 PSI (19.3 MPa) at ambient temperature, with thermal pressure compensation. Designed to handle pressures ranging from low to high, commonly up to 20 bar or more, depending on the model and application.
Utilizes mechanical seals, metal bellows, carbon seals, and high-performance elastomers that resist thermal degradation to ensure long-lasting, leak-free performance.
Smooth operation at up to 1200 RPM (high-speed variants available for specialized furnaces).
316L stainless steel body with ceramic-coated bearings and PTFE seals for corrosion resistance and minimal thermal degradation.
Supports hydraulic oil, steam, thermal oil, and coolant transfer, adaptable to industrial ovens and heat exchangers.
Equipped with precision ball bearings or carbon bearings that tolerate high temperatures and reduce friction for smooth rotation and extended service life.
Materials such as stainless steel, nickel-plated steel, and special alloys provide corrosion resistance and durability under harsh conditions.
Available in single or multi-passage configurations, with flange or threaded connections to suit various industrial machinery setups.
Many models feature split designs for quick on-site repair and wear indication grooves to facilitate proactive maintenance.
The High Temperature Rotary Union excels in extreme-heat industrial scenarios, including:
Steam and hot oil transfer for drying cylinders and calender rolls
Calendering and extrusion lines requiring heat transfer fluids
Transfers hot oil and coolant in continuous casting machines operating near 1000°C.
Connects rotating feeder mechanisms in glass manufacturing furnaces with 600°C+ environments.
Manages high-temperature steam and chemical media in cracking units.
Transmits lubricant to rotating kiln bearings in cement processing plants.
Facilitates fluid transfer in engine test stands, simulating re-entry temperatures.
Circulation of thermal oils in reactors and heat exchangers
Steam and hot water transfer in cooking and sterilization equipment
Ensures leak-free fluid transfer at elevated temperatures, reducing downtime and maintenance costs
Supports high-pressure and high-speed operation for demanding industrial processes
Uses specialized seals and bearings that resist wear and thermal degradation
Provides flexible mounting options, including flanged and threaded connections for easy integration
Enhances equipment lifespan through durable materials and advanced engineering
When selecting the right rotary union for high-temperature applications, consider the following:
✅ Fluid Media Type (steam, oil, water)
✅ Maximum Operating Temperature
✅ Pressure & Flow Requirements
✅ Rotational Speed (RPM)
✅ Seal Compatibility with Media
✅ Mounting Orientation (vertical, horizontal)
✅ Thermal Expansion Compensation Design
Tip: Always select unions rated 15–20% higher than your system’s peak temperature and pressure for added safety and longevity.
✅ Proven operation up to 750°F (400°C)
✅ Durable graphite or carbon sealing options
✅ Compact, vibration-resistant designs
✅ Custom flange and threaded port configurations
✅ Engineered for continuous high-heat duty cycles
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THE WORLD'S LEADING ROTARY UNIONS MANUFACTURERS
