The precision seal-ring is made of high quality materials by an advanced process with several patented technologies,have very complicated shapes,high accuracy,stable mechanic properties,much higher wear

and corrosion resistance,and a service life of more than twenty thousand hours in the normal case.

It will be used mainly for waste water pump,water discharge pump for the mines,centrifugal pump,centrifuge,slag

slurry pump in the adverse working conditions of high speed rotaton,sand flush abrasion and corrosion.