Moog's rotary unions are used around the world to ensure the reliable transmission of media such as oil, water, grease, emulsion, air, compressed air, gases and vacuum, from the stationary to the rotating part of a machine. Our rotary unions include standard and customizable designs, engineered to meet the most demanding application requirements across various industries.
Currently, Moog offers rotary unions rated for pressures up to 15,000 PSI (1,000 bar), speeds up to 40,000 rpm and vacuums up to 10-8 hPa (depending on size, number of channels, and flow rate). Seals are selected based on transmitted media, chemical compatibility, design pressure, rotational speed, design temperature, required service life and acceptable leakage rate. Rotary unions can be combined with our electrical slip rings and fiber optic rotary joints to achieve unique space and performance specifications.