Model ZLR-1100 Single Cartridge Mechanical Seal


  • Cartridge Design – No measuring, self centering installation.  Just slide over shaft, tighten gland bolts and set screws, remove centering clips, and the seal is ready to operate.
  • Double Balance – World’s first double balanced single seal.  O-ring shifts to accommodate pressure from either the process side or the atmospheric side when the pump is under vacuum.  Wide o-ring groove absorbs o-ring swell without hanging up seal.
  • Stationary Seal Design – Springs do not rotate, ensuring highest resistance against destructive vibration harmonics.
  • Monolithic Faces – Thick cross section for higher pressure and temperature capability without distortion.
  • No Shaft Fretting – No moving parts on shaft, means no shaft damage, and no need for a sacrificial sleeve.
  • Gland Insert – For High Alloy Corrosion Protection.
  • Multiport Injection – Gives “showerhead” cleaning, cooling, and lubrication to seal faces when a flush is used.
  • Slotted Gland – Allows “universal” use in most rotating equipment.