Among different parts of a toilet, the seat wears with time. The same thing is happening to hinges as well. These hinges are situated at the rear of the toilet seat and support the seat movements. So it seems like it would be an easy job to purchase toilet seat fittings or their hinges. There is no need to replace the toilet seat if the hinges are broken. You can easily replace your toilet seats and their hinges if you have the right tools and spare parts.