ROTOSTAT systems are rotating unions with hydrostatically controlled gap seals and are used wherever high speeds and pressures are required. The stationary and rotating parts do not come into contact. Only viscous friction develops, the leakage occuring is kept within narrow limits to be determined in advance and this leakage must be returned.

Metallic wear is impossible. There is no relationship between pressure and speed. During rotation, a minimum pressure is always required to ensure the gap control. Most pressurized media, even gases, can be transferred. ROTOSTAT systems are used wherever high speeds are required. ROTOSTAT (N + A series) is availabel both as a cartridge element for various diameters and as a complete sandwich design multi-channel rotating union. Therefore, the essential parts can easily be replaced. ROTOSTAT model E is available only as a complete rotating union in both single and multichannel versions.