You can also buy washing machine parts from a bricks and mortar store - if you can find one nearby. You will often have to end up ordering it at the store and then going back to collect it when it finally arrives, as many stores do not keep any but the most common parts now. They do this to reduce their own costs as it is no point them carrying a lot of parts that may well not be needed. They could sit on the shelf for years until that model appliance went out of date and then they would never get sold.
It is therefore essential for a consumer to maintain the washing machine whether it is old or new. Remember that washing machine has many moving parts as can be seen. Moving parts will cause wear and tear. Similarly the temperature of water also causes impacts on the parts of the machine. Detergents, bleaches and softeners used for washing have acid contents which will react with certain parts of the machine especially metallic parts. Residues formed after the washing process may get deposited in different places in the interiors of the machine.