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