Factory-Direct Rotary Unions
Rotary Unions & Rotary Joints, Factory Direct
Transfer water, steam, air and hydraulic oil from stationary pipes into rotating machinery — reliably, for millions of revolutions. LOOP ENGINEERING manufactures single and multi-passage rotary unions with balanced mechanical seals, at factory-direct pricing with OEM/ODM support.
OUR PRODUCT LINE
Rotary Unions for Every Medium
From a single-channel air union for a packaging machine to a multi-passage steam union for a paper dryer — one factory, one partner for your entire rotating joint requirement.
Single Passage Rotary Unions
Compact single-channel rotary unions for water, air and coolant — the workhorse for machine tools, spindles and packaging lines.
View DetailsMulti Passage Rotary Unions
2 to 8 independent channels for combined media — air plus hydraulic, water plus electric, vacuum plus coolant in one union.
View DetailsSteam Rotary Unions
High-temperature saturated steam unions for paper dryers, textile calenders and rubber mills — carbon-graphite balanced seals.
View DetailsHydraulic Rotary Unions
High-pressure hydraulic rotating unions rated to 500 bar for test rigs, rotary tables and hydraulic spindles.
View DetailsHigh Speed Rotary Unions
Precision-balanced unions for 10,000+ RPM spindle service with sealed-for-life hybrid bearings and low-torque seals.
View DetailsDeublin Replacements
Drop-in replacement rotary unions cross-referenced to Deublin part numbers — same mounting, same performance, factory-direct pricing.
View DetailsWHY LOOP ENGINEERING
Engineered for Millions of Revolutions
A rotary union is the point where reliability matters most — a leak here stops the whole line. We build every unit with balanced seals, precision bearings and 100% pressure testing.
Balanced Mechanical Seals
Carbon graphite vs hardened tool steel or silicon carbide seal faces — extended service life with minimal torque.
Multiple Media
Water, coolant, compressed air, steam, hydraulic oil and vacuum — engineered per fluid, not one-size-fits-all.
OEM & ODM Support
Private-label rotary unions built to your drawings, with your brand, at factory-direct pricing.
Drop-in Replacements
Direct cross-reference for Deublin and other major brands — same footprint, same connections, no re-engineering.
Precision Manufacturing
CNC-turned housings and rotors, laboratory-tested at rated pressure and speed before shipment.
Global Shipping
Fast DDP delivery worldwide with complete documentation and export packaging.
APPLICATIONS
Industries We Serve
Machine tools, paper & printing, textile, food & beverage, rubber & plastic, steel & metal, chemical and wind & solar — wherever rotating machinery needs a reliable media connection.
Need a Rotary Union That Fits Your Machine?
Send us your working conditions — medium, pressure, speed, port size — and get a quote within 24 hours.