it is structure with materal of PTEE. it is can make up for pump shaft circular runout, Single pump face seal packed , easily loading and unloading ,perfectly opearating  status .  Carry  with   instruction  line , which is located in middle of seal  
it have three materials of mechanical seal  Dynamic & static ring connect face according delivery medium 
1,99% Alumina Ceramics 2,Reaction Sintered Silicon Carbide 3, Pressureless Sintering of silicon carbide
Application Range : Pressure : ≤0.5MPa
Operating Temperature :-20-160 Degree
  Rotated Speed :≤2m/s
  Medium : Acid , Alkali ,Oil ,Macromolecule    
   Suspension Liquid  : if the medium contain granular  , it is best choose of Silicon carbide Mechanical seal