These are Pusher Type Mechanical Seals having special Wave or Disc Spring which works well on contaminated liquids, hence preferred on Multi spring design . Such Seals are compact, robust & bi-directional to Use in clear as well as contaminated liquids. The Wave Spring Mechanical Seals can be offered in several designs in single or double & Un-balanced or Balance Confugiration. Most Common are.
UE-M Series Mechanical Seals : it is having loosely fitted face with 'O' Ring, hence easy to assemble . it find great use and very popular in industry.
UE-H Series mechanical Seals : it is balanced Seal with lug drive. Wave Spring avoid liquid contact, hence it is very useful in viscous, contaminated liquids on High pressure.

 

Application :
Clear, Viscous, contaminated Liquids.