A slurry pump taken apart
This is what a slurry pump looks like when laid out in one line.
Shaft on bearings, frame, seal, and in the middle — impeller, volute and liners.
The slurry eats only these. They are replaced as a set every few months, while everything else lasts for years.
That is why an experienced mechanic asks a supplier not “how much is the pump” but “how much is the wet end and when will it arrive”.