Mechanical Seals
Rotary Union
Precision rotating joint for transferring steam, thermal oil, or coolant into rotating rolls.
High-precision rotating mechanical union designed to introduce or remove heating steam, hot oil, cooling water, or hydraulic fluid into rotating dryer rolls, calenders, and mixer drums without leakage.
Product photo · Rotary Union
Specifications
Technical profile
- Passages
- Single passage or dual passage (fixed / rotating syphon pipe)
- Connections
- 1/4 inch to 4 inch BSP / NPT threaded or flanged rotor end
- Media
- Saturated steam, hot thermal oil, cooling water, compressed air
- Max Speed
- Up to 3000 RPM (size and media dependent)
- Max Pressure
- Up to 40 bar hydraulic / 17 bar steam
- Max Temperature
- Up to 300 °C (with graphite/spherical carbon seal ring)
- Seal interface
- Micro-lapped spherical carbon-graphite vs hardened steel/SiC
Specifications are typical and vary by variant. Share your duty conditions for an exact recommendation.
Key benefits
Why this product
- Spherical carbon seal ring allows self-alignment and compensates for roll eccentricity
- Two-wide spaced ball bearings provide rigid rotor support and smooth high-speed rotation
- Quick-release end cap allows carbon seal ring replacement while union remains on machine
- Spring-loaded seal interface maintains positive leak-tight contact during pressure drops
Applications
Typical industries
PlasticsChemicalDye ManufacturingFood
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Need this rotary union for your line?
Share your duty conditions and drawings — our team responds with a technical recommendation and a firm quote.