Single Balanced Pusher Seal.

ProSEAL® CSS Series is a single balanced pusher seal for general services, primarily for application in the petrochemical and chemical industry.
Single balanced pusher seal design
Complete cartridge for ease of installation
Heavy duty seal faces designed for zero leakage
Multiple spring design for uniform load, shorter overall length and larger axial displacement
Stationary spring design with minimum rotating mass for high sliding velocity capability
Special design with pumping device for forced circulation, better cooling efficiency and better heat removal capability
Spring protected design. Eliminating exposure of spring from the process fluid