What are the wearing parts in the slurry pump accessories?

Slurry Pump is used to transport the slurry containing particulate matter, particulate matter will wear on our pump, so what are the wearing parts?
There is a noun called flow parts in slurry pump accessories, which means the accessories that contact the slurry directly, or the accessories that the slurry contacts in the pump chamber.The flow parts include Impeller, sheath and guard plate.In addition to the flow parts are relatively easy to wear, in the shaft sealing part, there are also small parts that need to be maintained and replaced by the manager.