Well well.. as with pretty much anything in a home, toilet seat covers are susceptible to breakdowns too.
Here's a list of things we've come across in our line when seat covers go awry:
- cracked seats or covers
- rusty hinges, broken hinges, resulting in one side, or both sides of the seat coming loose
- discolouration of the seat cover
- rubber dampers on the seat cover worn out causing it to become imbalanced when a use is on the seat
Generally, they are all related to usual wear and tear.... nothing big to worry about....