Universal Seal (7800 Series)

 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-in. radial run-out, while the primary ring shape responds under pressure, further enhancing very low speed face separation. Lift-off and the double-cartridge seals use 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.