With a modular cartridge design, the heavy-duty gas-lubricated Universal Seal (7800 Series) is ideal for use in a wide variety of mixing and agitating equipment, as well as other top entry mixer applications. The Type 7800 uses modular hardware, allowing for maximum interchangeability and efficiency. This convertible format will support contacting dry, contacting wet, non-contacting or a combination of non-contacting and dry contacting seal technology without the need to change any adaptive hardware. The patented grooved rotor allows equal lift in the presence of up to 0.125-inch radial run-out, while the primary ring shape responds under pressure, further enhancing very low speed face separation. Lift-off and the double cartridge uses common springs, allowing for seal-adjustment to axial motion and the optimized drive minimizes seal face to seal cartridge hardware interaction eliminating low speed hang-up.

John Crane Mechanical Seals
6400 W Oakton St
Morton Grove, IL, 60053