The ST81KU is a simple, rotating, wave-spring, unbalanced ‘O’-ring mounted, pusher type seal for general purpose application in chemical, petrochemical, oil & gas processing, water treatment and sewage plants, and pulp and paper mills, steel facility etc with ANSI chemical pumps.

Specific Features of ST81KU
• Simple structure, unbalance, wave-spring type
• The rotating seal face drive mechanism provides excellent torque
transmission. [3 point torque transmitter]
• Can be installed in DIN EN 12756-2001 standard pumps without
seal chamber modification.
• Can be provided as an engineered cartridge construction in
single, double or tandem arrangements with a complete range of
auxiliary sealing devices and seal support systems.

Operating Capabilities
• Temperature : -30~200℃
• Pressure : 2.5 MPa (D1＝10- 50mm)
2.0 MPa (D1＝53-100mm)
1.6 MPa (D1＝105-200mm)
• Speed : 20m/sec
 

Materials 

-Seal Face
-Silicon carbide
-Tungsten carbide
-Antimony Imp. Carbon
-Resin Imp. Carbon.
-Special Steel