signs of wearing equipment?

Hi there. I was wondering what's the usual lifespan of watercooling equpiment. Also, what should i look for in my WB, rad, and even pump to see if they are going to die soon and also signs of corrosion? It would also help alot if people posted pics of worn out hardware. Thanks

if not mixing metals, and using corrosion prohibitor

15 years+ for all but pump

you didn't bother to tell what pump, but 6months to 100 years would be a good range

My pump is from Maxijet. Not sure about their lifespans though heh.