Automotive cooling pump mechanical seal/automotive water pump seals have played a very important part in automotive industry.Automotive pumps are belt-driven centrifugal pumps where coolant is circulated through pump system while the engine is operating. Automotive pump seals are characterized with integral and split types.Materials of an automotive pump seal are mainly carbon/graphite seal face,ceramic seal ring and secondary sealing elements in NBR,FKM,Epdm,or HNBR.Silicon carbide mating rings are selected to match carbon seal face,as the most ideal material combination.Dyseals has been equipped with an automotive pump seal assembly line and 30 years production experience has enabled us to supply high quality mechanical seals.