Constructed with SS and bronze components, Over-The-Shaft is custom-designed for machinery that requires cooling on drive side of driven rolls and for rolls that cannot accept axially-mounted rotary union. Mechanical-seal version handles high speed applications up to 750 rpm. Soft-seal version with quad-seal O-ring and thrust washer suits slower speed applications. Rated up to 220°F and 150 psi, rotary union can be applied to hydraulic oil/air applications.