HD series | mechanical seal spring design TGSI & SISI for types 80-160 to 100-250


Main features of the new spring design are:

  • Entirely made of high performance plastic (no metal parts whatsoever)
  • Improved distribution of forces
  • Perfect linearity to the seal
  • Increased pressure stability (water hammer) 
  • Improved stator locking against rotation
  • Enhanced liquid film accuracy
  • 100% interchangeable with existing pumps